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Finding the Fourth Proportional to 1,192.60, 1,787.28 and 498.43

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Solution

The fourth proportional to 1,192.60, 1,787.28 and 498.43 is: 746.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.60 : 1,787.28 = 498.43 : x
  2. Step 2: Convert to fraction form
    1,192.60/1,787.28 = 498.43/x
  3. Step 3: Cross multiply
    1,192.60x = 1,787.28 × 498.43
  4. Step 4: Simplify right side
    1,192.60x = 890,833.97
  5. Step 5: Solve for x
    x = 890,833.97/1,192.60
  6. Step 6: Final answer
    x = 746.97

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1.5x scale

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.