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Finding the Fourth Proportional to 1,335.60, 2,002.08 and 750.88

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Solution

The fourth proportional to 1,335.60, 2,002.08 and 750.88 is: 1,125.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.60 : 2,002.08 = 750.88 : x
  2. Step 2: Convert to fraction form
    1,335.60/2,002.08 = 750.88/x
  3. Step 3: Cross multiply
    1,335.60x = 2,002.08 × 750.88
  4. Step 4: Simplify right side
    1,335.60x = 1,503,321.83
  5. Step 5: Solve for x
    x = 1,503,321.83/1,335.60
  6. Step 6: Final answer
    x = 1,125.58

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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.