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Finding the Fourth Proportional to 171.99, 237.40 and 137.08

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Solution

The fourth proportional to 171.99, 237.40 and 137.08 is: 189.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.99 : 237.40 = 137.08 : x
  2. Step 2: Convert to fraction form
    171.99/237.40 = 137.08/x
  3. Step 3: Cross multiply
    171.99x = 237.40 × 137.08
  4. Step 4: Simplify right side
    171.99x = 32,542.79
  5. Step 5: Solve for x
    x = 32,542.79/171.99
  6. Step 6: Final answer
    x = 189.21

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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.