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Finding the Fourth Proportional to 167.36, 230.49 and 156.02

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Solution

The fourth proportional to 167.36, 230.49 and 156.02 is: 214.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.36 : 230.49 = 156.02 : x
  2. Step 2: Convert to fraction form
    167.36/230.49 = 156.02/x
  3. Step 3: Cross multiply
    167.36x = 230.49 × 156.02
  4. Step 4: Simplify right side
    167.36x = 35,959.90
  5. Step 5: Solve for x
    x = 35,959.90/167.36
  6. Step 6: Final answer
    x = 214.87

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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.