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Finding the Fourth Proportional to 451.01, 624.04 and 392.92

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Solution

The fourth proportional to 451.01, 624.04 and 392.92 is: 543.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.01 : 624.04 = 392.92 : x
  2. Step 2: Convert to fraction form
    451.01/624.04 = 392.92/x
  3. Step 3: Cross multiply
    451.01x = 624.04 × 392.92
  4. Step 4: Simplify right side
    451.01x = 245,195.25
  5. Step 5: Solve for x
    x = 245,195.25/451.01
  6. Step 6: Final answer
    x = 543.66

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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.