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Finding the Fourth Proportional to 708.81, 1,061.24 and 534.95

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Solution

The fourth proportional to 708.81, 1,061.24 and 534.95 is: 800.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.81 : 1,061.24 = 534.95 : x
  2. Step 2: Convert to fraction form
    708.81/1,061.24 = 534.95/x
  3. Step 3: Cross multiply
    708.81x = 1,061.24 × 534.95
  4. Step 4: Simplify right side
    708.81x = 567,702.36
  5. Step 5: Solve for x
    x = 567,702.36/708.81
  6. Step 6: Final answer
    x = 800.93

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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.