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Finding the Fourth Proportional to 154.46, 231.74 and 63.11

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Solution

The fourth proportional to 154.46, 231.74 and 63.11 is: 94.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.46 : 231.74 = 63.11 : x
  2. Step 2: Convert to fraction form
    154.46/231.74 = 63.11/x
  3. Step 3: Cross multiply
    154.46x = 231.74 × 63.11
  4. Step 4: Simplify right side
    154.46x = 14,623.64
  5. Step 5: Solve for x
    x = 14,623.64/154.46
  6. Step 6: Final answer
    x = 94.68

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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.