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Finding the Fourth Proportional to 1,177.77, 1,626.35 and 736.42

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Solution

The fourth proportional to 1,177.77, 1,626.35 and 736.42 is: 1,016.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.77 : 1,626.35 = 736.42 : x
  2. Step 2: Convert to fraction form
    1,177.77/1,626.35 = 736.42/x
  3. Step 3: Cross multiply
    1,177.77x = 1,626.35 × 736.42
  4. Step 4: Simplify right side
    1,177.77x = 1,197,676.67
  5. Step 5: Solve for x
    x = 1,197,676.67/1,177.77
  6. Step 6: Final answer
    x = 1,016.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.