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Finding the Fourth Proportional to 462.12, 693.22 and 154

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Solution

The fourth proportional to 462.12, 693.22 and 154 is: 231.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.12 : 693.22 = 154 : x
  2. Step 2: Convert to fraction form
    462.12/693.22 = 154/x
  3. Step 3: Cross multiply
    462.12x = 693.22 × 154
  4. Step 4: Simplify right side
    462.12x = 106,755.88
  5. Step 5: Solve for x
    x = 106,755.88/462.12
  6. Step 6: Final answer
    x = 231.01

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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.