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Finding the Fourth Proportional to 170.70, 234.99 and 147.69

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Solution

The fourth proportional to 170.70, 234.99 and 147.69 is: 203.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.70 : 234.99 = 147.69 : x
  2. Step 2: Convert to fraction form
    170.70/234.99 = 147.69/x
  3. Step 3: Cross multiply
    170.70x = 234.99 × 147.69
  4. Step 4: Simplify right side
    170.70x = 34,705.67
  5. Step 5: Solve for x
    x = 34,705.67/170.70
  6. Step 6: Final answer
    x = 203.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.