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Finding the Fourth Proportional to 511.47, 767.65 and 237.71

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Solution

The fourth proportional to 511.47, 767.65 and 237.71 is: 356.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.47 : 767.65 = 237.71 : x
  2. Step 2: Convert to fraction form
    511.47/767.65 = 237.71/x
  3. Step 3: Cross multiply
    511.47x = 767.65 × 237.71
  4. Step 4: Simplify right side
    511.47x = 182,478.08
  5. Step 5: Solve for x
    x = 182,478.08/511.47
  6. Step 6: Final answer
    x = 356.78

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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.