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Finding the Fourth Proportional to 510.85, 766.39 and 202.71

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Solution

The fourth proportional to 510.85, 766.39 and 202.71 is: 304.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.85 : 766.39 = 202.71 : x
  2. Step 2: Convert to fraction form
    510.85/766.39 = 202.71/x
  3. Step 3: Cross multiply
    510.85x = 766.39 × 202.71
  4. Step 4: Simplify right side
    510.85x = 155,354.92
  5. Step 5: Solve for x
    x = 155,354.92/510.85
  6. Step 6: Final answer
    x = 304.11

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.