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Finding the Fourth Proportional to 266.38, 399.46 and 93.01

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Solution

The fourth proportional to 266.38, 399.46 and 93.01 is: 139.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.38 : 399.46 = 93.01 : x
  2. Step 2: Convert to fraction form
    266.38/399.46 = 93.01/x
  3. Step 3: Cross multiply
    266.38x = 399.46 × 93.01
  4. Step 4: Simplify right side
    266.38x = 37,152.54
  5. Step 5: Solve for x
    x = 37,152.54/266.38
  6. Step 6: Final answer
    x = 139.47

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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.