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Finding the Fourth Proportional to 626.72, 864.51 and 429.89

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Solution

The fourth proportional to 626.72, 864.51 and 429.89 is: 593.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.72 : 864.51 = 429.89 : x
  2. Step 2: Convert to fraction form
    626.72/864.51 = 429.89/x
  3. Step 3: Cross multiply
    626.72x = 864.51 × 429.89
  4. Step 4: Simplify right side
    626.72x = 371,644.20
  5. Step 5: Solve for x
    x = 371,644.20/626.72
  6. Step 6: Final answer
    x = 593.00

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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.