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Finding the Fourth Proportional to 182.60, 251.98 and 99.70

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Solution

The fourth proportional to 182.60, 251.98 and 99.70 is: 137.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.60 : 251.98 = 99.70 : x
  2. Step 2: Convert to fraction form
    182.60/251.98 = 99.70/x
  3. Step 3: Cross multiply
    182.60x = 251.98 × 99.70
  4. Step 4: Simplify right side
    182.60x = 25,122.66
  5. Step 5: Solve for x
    x = 25,122.66/182.60
  6. Step 6: Final answer
    x = 137.59

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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.