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Finding the Fourth Proportional to 709.01, 1,061.49 and 547.01

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Solution

The fourth proportional to 709.01, 1,061.49 and 547.01 is: 818.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    709.01 : 1,061.49 = 547.01 : x
  2. Step 2: Convert to fraction form
    709.01/1,061.49 = 547.01/x
  3. Step 3: Cross multiply
    709.01x = 1,061.49 × 547.01
  4. Step 4: Simplify right side
    709.01x = 580,645.64
  5. Step 5: Solve for x
    x = 580,645.64/709.01
  6. Step 6: Final answer
    x = 818.95

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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.