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Finding the Fourth Proportional to 1,254.60, 1,729.52 and 880.42

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Solution

The fourth proportional to 1,254.60, 1,729.52 and 880.42 is: 1,213.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.60 : 1,729.52 = 880.42 : x
  2. Step 2: Convert to fraction form
    1,254.60/1,729.52 = 880.42/x
  3. Step 3: Cross multiply
    1,254.60x = 1,729.52 × 880.42
  4. Step 4: Simplify right side
    1,254.60x = 1,522,704.00
  5. Step 5: Solve for x
    x = 1,522,704.00/1,254.60
  6. Step 6: Final answer
    x = 1,213.70

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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.