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Finding the Fourth Proportional to 709.52, 1,063.40 and 503.65

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Solution

The fourth proportional to 709.52, 1,063.40 and 503.65 is: 754.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    709.52 : 1,063.40 = 503.65 : x
  2. Step 2: Convert to fraction form
    709.52/1,063.40 = 503.65/x
  3. Step 3: Cross multiply
    709.52x = 1,063.40 × 503.65
  4. Step 4: Simplify right side
    709.52x = 535,583.05
  5. Step 5: Solve for x
    x = 535,583.05/709.52
  6. Step 6: Final answer
    x = 754.86

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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.