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Finding the Fourth Proportional to 1,033.55, 1,544.35 and 781.73

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Solution

The fourth proportional to 1,033.55, 1,544.35 and 781.73 is: 1,168.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,033.55 : 1,544.35 = 781.73 : x
  2. Step 2: Convert to fraction form
    1,033.55/1,544.35 = 781.73/x
  3. Step 3: Cross multiply
    1,033.55x = 1,544.35 × 781.73
  4. Step 4: Simplify right side
    1,033.55x = 1,207,264.73
  5. Step 5: Solve for x
    x = 1,207,264.73/1,033.55
  6. Step 6: Final answer
    x = 1,168.08

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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.