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Finding the Fourth Proportional to 1,540.52, 2,310.88 and 553.53

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Solution

The fourth proportional to 1,540.52, 2,310.88 and 553.53 is: 830.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.52 : 2,310.88 = 553.53 : x
  2. Step 2: Convert to fraction form
    1,540.52/2,310.88 = 553.53/x
  3. Step 3: Cross multiply
    1,540.52x = 2,310.88 × 553.53
  4. Step 4: Simplify right side
    1,540.52x = 1,279,140.02
  5. Step 5: Solve for x
    x = 1,279,140.02/1,540.52
  6. Step 6: Final answer
    x = 830.33

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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.