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Finding the Fourth Proportional to 1,099.52, 1,517.28 and 602.12

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Solution

The fourth proportional to 1,099.52, 1,517.28 and 602.12 is: 830.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099.52 : 1,517.28 = 602.12 : x
  2. Step 2: Convert to fraction form
    1,099.52/1,517.28 = 602.12/x
  3. Step 3: Cross multiply
    1,099.52x = 1,517.28 × 602.12
  4. Step 4: Simplify right side
    1,099.52x = 913,584.63
  5. Step 5: Solve for x
    x = 913,584.63/1,099.52
  6. Step 6: Final answer
    x = 830.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.