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Finding the Fourth Proportional to 502.78, 694.37 and 461.32

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Solution

The fourth proportional to 502.78, 694.37 and 461.32 is: 637.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.78 : 694.37 = 461.32 : x
  2. Step 2: Convert to fraction form
    502.78/694.37 = 461.32/x
  3. Step 3: Cross multiply
    502.78x = 694.37 × 461.32
  4. Step 4: Simplify right side
    502.78x = 320,328.14
  5. Step 5: Solve for x
    x = 320,328.14/502.78
  6. Step 6: Final answer
    x = 637.11

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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.