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Finding the Fourth Proportional to 1,165.24, 1,741.13 and 881.95

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Solution

The fourth proportional to 1,165.24, 1,741.13 and 881.95 is: 1,317.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.24 : 1,741.13 = 881.95 : x
  2. Step 2: Convert to fraction form
    1,165.24/1,741.13 = 881.95/x
  3. Step 3: Cross multiply
    1,165.24x = 1,741.13 × 881.95
  4. Step 4: Simplify right side
    1,165.24x = 1,535,589.60
  5. Step 5: Solve for x
    x = 1,535,589.60/1,165.24
  6. Step 6: Final answer
    x = 1,317.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.