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Finding the Fourth Proportional to 234.16, 351.72 and 148.96

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Solution

The fourth proportional to 234.16, 351.72 and 148.96 is: 223.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.16 : 351.72 = 148.96 : x
  2. Step 2: Convert to fraction form
    234.16/351.72 = 148.96/x
  3. Step 3: Cross multiply
    234.16x = 351.72 × 148.96
  4. Step 4: Simplify right side
    234.16x = 52,392.21
  5. Step 5: Solve for x
    x = 52,392.21/234.16
  6. Step 6: Final answer
    x = 223.75

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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.