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Finding the Fourth Proportional to 704.97, 972.81 and 557.96

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Solution

The fourth proportional to 704.97, 972.81 and 557.96 is: 769.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.97 : 972.81 = 557.96 : x
  2. Step 2: Convert to fraction form
    704.97/972.81 = 557.96/x
  3. Step 3: Cross multiply
    704.97x = 972.81 × 557.96
  4. Step 4: Simplify right side
    704.97x = 542,784.20
  5. Step 5: Solve for x
    x = 542,784.20/704.97
  6. Step 6: Final answer
    x = 769.94

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.