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Finding the Fourth Proportional to 462.48, 637.78 and 314.86

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Solution

The fourth proportional to 462.48, 637.78 and 314.86 is: 434.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.48 : 637.78 = 314.86 : x
  2. Step 2: Convert to fraction form
    462.48/637.78 = 314.86/x
  3. Step 3: Cross multiply
    462.48x = 637.78 × 314.86
  4. Step 4: Simplify right side
    462.48x = 200,811.41
  5. Step 5: Solve for x
    x = 200,811.41/462.48
  6. Step 6: Final answer
    x = 434.21

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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.