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Finding the Fourth Proportional to 1,458.40, 2,187.84 and 484.52

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Solution

The fourth proportional to 1,458.40, 2,187.84 and 484.52 is: 726.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.40 : 2,187.84 = 484.52 : x
  2. Step 2: Convert to fraction form
    1,458.40/2,187.84 = 484.52/x
  3. Step 3: Cross multiply
    1,458.40x = 2,187.84 × 484.52
  4. Step 4: Simplify right side
    1,458.40x = 1,060,052.24
  5. Step 5: Solve for x
    x = 1,060,052.24/1,458.40
  6. Step 6: Final answer
    x = 726.86

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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.