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Finding the Fourth Proportional to 424.89, 634.47 and 372.45

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Solution

The fourth proportional to 424.89, 634.47 and 372.45 is: 556.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.89 : 634.47 = 372.45 : x
  2. Step 2: Convert to fraction form
    424.89/634.47 = 372.45/x
  3. Step 3: Cross multiply
    424.89x = 634.47 × 372.45
  4. Step 4: Simplify right side
    424.89x = 236,305.97
  5. Step 5: Solve for x
    x = 236,305.97/424.89
  6. Step 6: Final answer
    x = 556.15

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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.