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Finding the Fourth Proportional to 731.43, 1,096.61 and 438.89

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Solution

The fourth proportional to 731.43, 1,096.61 and 438.89 is: 658.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.43 : 1,096.61 = 438.89 : x
  2. Step 2: Convert to fraction form
    731.43/1,096.61 = 438.89/x
  3. Step 3: Cross multiply
    731.43x = 1,096.61 × 438.89
  4. Step 4: Simplify right side
    731.43x = 481,283.49
  5. Step 5: Solve for x
    x = 481,283.49/731.43
  6. Step 6: Final answer
    x = 658.00

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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.