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Finding the Fourth Proportional to 69.48, 96.32 and 67.23

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Solution

The fourth proportional to 69.48, 96.32 and 67.23 is: 93.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.48 : 96.32 = 67.23 : x
  2. Step 2: Convert to fraction form
    69.48/96.32 = 67.23/x
  3. Step 3: Cross multiply
    69.48x = 96.32 × 67.23
  4. Step 4: Simplify right side
    69.48x = 6,475.59
  5. Step 5: Solve for x
    x = 6,475.59/69.48
  6. Step 6: Final answer
    x = 93.20

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.