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Finding the Fourth Proportional to 1,452.77, 2,179.49 and 478.88

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Solution

The fourth proportional to 1,452.77, 2,179.49 and 478.88 is: 718.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,452.77 : 2,179.49 = 478.88 : x
  2. Step 2: Convert to fraction form
    1,452.77/2,179.49 = 478.88/x
  3. Step 3: Cross multiply
    1,452.77x = 2,179.49 × 478.88
  4. Step 4: Simplify right side
    1,452.77x = 1,043,714.17
  5. Step 5: Solve for x
    x = 1,043,714.17/1,452.77
  6. Step 6: Final answer
    x = 718.43

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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.