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Finding the Fourth Proportional to 625.63, 864.25 and 451.89

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Solution

The fourth proportional to 625.63, 864.25 and 451.89 is: 624.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.63 : 864.25 = 451.89 : x
  2. Step 2: Convert to fraction form
    625.63/864.25 = 451.89/x
  3. Step 3: Cross multiply
    625.63x = 864.25 × 451.89
  4. Step 4: Simplify right side
    625.63x = 390,545.93
  5. Step 5: Solve for x
    x = 390,545.93/625.63
  6. Step 6: Final answer
    x = 624.24

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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.