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Finding the Fourth Proportional to 631.31, 941.81 and 614.30

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Solution

The fourth proportional to 631.31, 941.81 and 614.30 is: 916.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.31 : 941.81 = 614.30 : x
  2. Step 2: Convert to fraction form
    631.31/941.81 = 614.30/x
  3. Step 3: Cross multiply
    631.31x = 941.81 × 614.30
  4. Step 4: Simplify right side
    631.31x = 578,553.88
  5. Step 5: Solve for x
    x = 578,553.88/631.31
  6. Step 6: Final answer
    x = 916.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.