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Finding the Fourth Proportional to 185.49, 277.56 and 113.40

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Solution

The fourth proportional to 185.49, 277.56 and 113.40 is: 169.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.49 : 277.56 = 113.40 : x
  2. Step 2: Convert to fraction form
    185.49/277.56 = 113.40/x
  3. Step 3: Cross multiply
    185.49x = 277.56 × 113.40
  4. Step 4: Simplify right side
    185.49x = 31,475.30
  5. Step 5: Solve for x
    x = 31,475.30/185.49
  6. Step 6: Final answer
    x = 169.69

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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.