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Finding the Fourth Proportional to 510.76, 704.97 and 289.85

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Solution

The fourth proportional to 510.76, 704.97 and 289.85 is: 400.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.76 : 704.97 = 289.85 : x
  2. Step 2: Convert to fraction form
    510.76/704.97 = 289.85/x
  3. Step 3: Cross multiply
    510.76x = 704.97 × 289.85
  4. Step 4: Simplify right side
    510.76x = 204,334.11
  5. Step 5: Solve for x
    x = 204,334.11/510.76
  6. Step 6: Final answer
    x = 400.06

Related Problems

Find fourth proportional to 255.38, 352.48 and 144.93
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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.