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Finding the Fourth Proportional to 1,060.53, 1,591.23 and 649.68

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Solution

The fourth proportional to 1,060.53, 1,591.23 and 649.68 is: 974.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,060.53 : 1,591.23 = 649.68 : x
  2. Step 2: Convert to fraction form
    1,060.53/1,591.23 = 649.68/x
  3. Step 3: Cross multiply
    1,060.53x = 1,591.23 × 649.68
  4. Step 4: Simplify right side
    1,060.53x = 1,033,790.31
  5. Step 5: Solve for x
    x = 1,033,790.31/1,060.53
  6. Step 6: Final answer
    x = 974.79

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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.