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Finding the Fourth Proportional to 510.75, 704.96 and 289.83

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Solution

The fourth proportional to 510.75, 704.96 and 289.83 is: 400.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.75 : 704.96 = 289.83 : x
  2. Step 2: Convert to fraction form
    510.75/704.96 = 289.83/x
  3. Step 3: Cross multiply
    510.75x = 704.96 × 289.83
  4. Step 4: Simplify right side
    510.75x = 204,318.56
  5. Step 5: Solve for x
    x = 204,318.56/510.75
  6. Step 6: Final answer
    x = 400.04

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Find fourth proportional to 255.38, 352.48 and 144.92
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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.