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Finding the Fourth Proportional to 266.58, 399.79 and 93.29

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Solution

The fourth proportional to 266.58, 399.79 and 93.29 is: 139.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.58 : 399.79 = 93.29 : x
  2. Step 2: Convert to fraction form
    266.58/399.79 = 93.29/x
  3. Step 3: Cross multiply
    266.58x = 399.79 × 93.29
  4. Step 4: Simplify right side
    266.58x = 37,296.41
  5. Step 5: Solve for x
    x = 37,296.41/266.58
  6. Step 6: Final answer
    x = 139.91

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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.