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Finding the Fourth Proportional to 245.18, 338.35 and 134.66

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Solution

The fourth proportional to 245.18, 338.35 and 134.66 is: 185.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.18 : 338.35 = 134.66 : x
  2. Step 2: Convert to fraction form
    245.18/338.35 = 134.66/x
  3. Step 3: Cross multiply
    245.18x = 338.35 × 134.66
  4. Step 4: Simplify right side
    245.18x = 45,559.85
  5. Step 5: Solve for x
    x = 45,559.85/245.18
  6. Step 6: Final answer
    x = 185.83

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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.