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Finding the Fourth Proportional to 1,027.52, 1,541.28 and 479.55

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Solution

The fourth proportional to 1,027.52, 1,541.28 and 479.55 is: 719.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,027.52 : 1,541.28 = 479.55 : x
  2. Step 2: Convert to fraction form
    1,027.52/1,541.28 = 479.55/x
  3. Step 3: Cross multiply
    1,027.52x = 1,541.28 × 479.55
  4. Step 4: Simplify right side
    1,027.52x = 739,120.82
  5. Step 5: Solve for x
    x = 739,120.82/1,027.52
  6. Step 6: Final answer
    x = 719.33

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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.