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Finding the Fourth Proportional to 711.52, 1,061.48 and 662.56

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Solution

The fourth proportional to 711.52, 1,061.48 and 662.56 is: 988.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    711.52 : 1,061.48 = 662.56 : x
  2. Step 2: Convert to fraction form
    711.52/1,061.48 = 662.56/x
  3. Step 3: Cross multiply
    711.52x = 1,061.48 × 662.56
  4. Step 4: Simplify right side
    711.52x = 703,294.19
  5. Step 5: Solve for x
    x = 703,294.19/711.52
  6. Step 6: Final answer
    x = 988.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.