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Finding the Fourth Proportional to 1,080.46, 1,616.76 and 935.92

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Solution

The fourth proportional to 1,080.46, 1,616.76 and 935.92 is: 1,400.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.46 : 1,616.76 = 935.92 : x
  2. Step 2: Convert to fraction form
    1,080.46/1,616.76 = 935.92/x
  3. Step 3: Cross multiply
    1,080.46x = 1,616.76 × 935.92
  4. Step 4: Simplify right side
    1,080.46x = 1,513,158.02
  5. Step 5: Solve for x
    x = 1,513,158.02/1,080.46
  6. Step 6: Final answer
    x = 1,400.48

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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.