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Finding the Fourth Proportional to 266.60, 399.92 and 237.64

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Solution

The fourth proportional to 266.60, 399.92 and 237.64 is: 356.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.60 : 399.92 = 237.64 : x
  2. Step 2: Convert to fraction form
    266.60/399.92 = 237.64/x
  3. Step 3: Cross multiply
    266.60x = 399.92 × 237.64
  4. Step 4: Simplify right side
    266.60x = 95,036.99
  5. Step 5: Solve for x
    x = 95,036.99/266.60
  6. Step 6: Final answer
    x = 356.48

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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.