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Finding the Fourth Proportional to 1,587.09, 2,380.52 and 532.91

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Solution

The fourth proportional to 1,587.09, 2,380.52 and 532.91 is: 799.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.09 : 2,380.52 = 532.91 : x
  2. Step 2: Convert to fraction form
    1,587.09/2,380.52 = 532.91/x
  3. Step 3: Cross multiply
    1,587.09x = 2,380.52 × 532.91
  4. Step 4: Simplify right side
    1,587.09x = 1,268,610.20
  5. Step 5: Solve for x
    x = 1,268,610.20/1,587.09
  6. Step 6: Final answer
    x = 799.33

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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.