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Finding the Fourth Proportional to 691.03, 1,034.37 and 484.99

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Solution

The fourth proportional to 691.03, 1,034.37 and 484.99 is: 725.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.03 : 1,034.37 = 484.99 : x
  2. Step 2: Convert to fraction form
    691.03/1,034.37 = 484.99/x
  3. Step 3: Cross multiply
    691.03x = 1,034.37 × 484.99
  4. Step 4: Simplify right side
    691.03x = 501,656.52
  5. Step 5: Solve for x
    x = 501,656.52/691.03
  6. Step 6: Final answer
    x = 725.95

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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.