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Finding the Fourth Proportional to 167.40, 249.35 and 159.50

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Solution

The fourth proportional to 167.40, 249.35 and 159.50 is: 237.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.40 : 249.35 = 159.50 : x
  2. Step 2: Convert to fraction form
    167.40/249.35 = 159.50/x
  3. Step 3: Cross multiply
    167.40x = 249.35 × 159.50
  4. Step 4: Simplify right side
    167.40x = 39,771.15
  5. Step 5: Solve for x
    x = 39,771.15/167.40
  6. Step 6: Final answer
    x = 237.58

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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.