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Finding the Fourth Proportional to 155.48, 233 and 68.88

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Solution

The fourth proportional to 155.48, 233 and 68.88 is: 103.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.48 : 233 = 68.88 : x
  2. Step 2: Convert to fraction form
    155.48/233 = 68.88/x
  3. Step 3: Cross multiply
    155.48x = 233 × 68.88
  4. Step 4: Simplify right side
    155.48x = 16,049.04
  5. Step 5: Solve for x
    x = 16,049.04/155.48
  6. Step 6: Final answer
    x = 103.22

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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.