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Finding the Fourth Proportional to 272.38, 374.79 and 265.90

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Solution

The fourth proportional to 272.38, 374.79 and 265.90 is: 365.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.38 : 374.79 = 265.90 : x
  2. Step 2: Convert to fraction form
    272.38/374.79 = 265.90/x
  3. Step 3: Cross multiply
    272.38x = 374.79 × 265.90
  4. Step 4: Simplify right side
    272.38x = 99,656.66
  5. Step 5: Solve for x
    x = 99,656.66/272.38
  6. Step 6: Final answer
    x = 365.87

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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.