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Finding the Fourth Proportional to 1,132.11, 1,701.99 and 891.54

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Solution

The fourth proportional to 1,132.11, 1,701.99 and 891.54 is: 1,340.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.11 : 1,701.99 = 891.54 : x
  2. Step 2: Convert to fraction form
    1,132.11/1,701.99 = 891.54/x
  3. Step 3: Cross multiply
    1,132.11x = 1,701.99 × 891.54
  4. Step 4: Simplify right side
    1,132.11x = 1,517,392.16
  5. Step 5: Solve for x
    x = 1,517,392.16/1,132.11
  6. Step 6: Final answer
    x = 1,340.32

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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.