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Finding the Fourth Proportional to 234.90, 351.95 and 153.60

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Solution

The fourth proportional to 234.90, 351.95 and 153.60 is: 230.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.90 : 351.95 = 153.60 : x
  2. Step 2: Convert to fraction form
    234.90/351.95 = 153.60/x
  3. Step 3: Cross multiply
    234.90x = 351.95 × 153.60
  4. Step 4: Simplify right side
    234.90x = 54,057.43
  5. Step 5: Solve for x
    x = 54,057.43/234.90
  6. Step 6: Final answer
    x = 230.13

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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.