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Finding the Fourth Proportional to 1,101.57, 1,652.45 and 553.47

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Solution

The fourth proportional to 1,101.57, 1,652.45 and 553.47 is: 830.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.57 : 1,652.45 = 553.47 : x
  2. Step 2: Convert to fraction form
    1,101.57/1,652.45 = 553.47/x
  3. Step 3: Cross multiply
    1,101.57x = 1,652.45 × 553.47
  4. Step 4: Simplify right side
    1,101.57x = 914,578.73
  5. Step 5: Solve for x
    x = 914,578.73/1,101.57
  6. Step 6: Final answer
    x = 830.25

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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.