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Finding the Fourth Proportional to 624.92, 937.68 and 393.15

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Solution

The fourth proportional to 624.92, 937.68 and 393.15 is: 589.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.92 : 937.68 = 393.15 : x
  2. Step 2: Convert to fraction form
    624.92/937.68 = 393.15/x
  3. Step 3: Cross multiply
    624.92x = 937.68 × 393.15
  4. Step 4: Simplify right side
    624.92x = 368,650.93
  5. Step 5: Solve for x
    x = 368,650.93/624.92
  6. Step 6: Final answer
    x = 589.92

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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.