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Finding the Fourth Proportional to 1,077.08, 1,616.42 and 729.59

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Solution

The fourth proportional to 1,077.08, 1,616.42 and 729.59 is: 1,094.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,077.08 : 1,616.42 = 729.59 : x
  2. Step 2: Convert to fraction form
    1,077.08/1,616.42 = 729.59/x
  3. Step 3: Cross multiply
    1,077.08x = 1,616.42 × 729.59
  4. Step 4: Simplify right side
    1,077.08x = 1,179,317.61
  5. Step 5: Solve for x
    x = 1,179,317.61/1,077.08
  6. Step 6: Final answer
    x = 1,094.93

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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.