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Finding the Fourth Proportional to 167.40, 230.62 and 118.18

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Solution

The fourth proportional to 167.40, 230.62 and 118.18 is: 162.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.40 : 230.62 = 118.18 : x
  2. Step 2: Convert to fraction form
    167.40/230.62 = 118.18/x
  3. Step 3: Cross multiply
    167.40x = 230.62 × 118.18
  4. Step 4: Simplify right side
    167.40x = 27,254.67
  5. Step 5: Solve for x
    x = 27,254.67/167.40
  6. Step 6: Final answer
    x = 162.81

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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.