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Finding the Fourth Proportional to 170.19, 253.82 and 151.11

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Solution

The fourth proportional to 170.19, 253.82 and 151.11 is: 225.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.19 : 253.82 = 151.11 : x
  2. Step 2: Convert to fraction form
    170.19/253.82 = 151.11/x
  3. Step 3: Cross multiply
    170.19x = 253.82 × 151.11
  4. Step 4: Simplify right side
    170.19x = 38,355.12
  5. Step 5: Solve for x
    x = 38,355.12/170.19
  6. Step 6: Final answer
    x = 225.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.