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Finding the Fourth Proportional to 166.65, 249.53 and 157.06

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Solution

The fourth proportional to 166.65, 249.53 and 157.06 is: 235.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.65 : 249.53 = 157.06 : x
  2. Step 2: Convert to fraction form
    166.65/249.53 = 157.06/x
  3. Step 3: Cross multiply
    166.65x = 249.53 × 157.06
  4. Step 4: Simplify right side
    166.65x = 39,191.18
  5. Step 5: Solve for x
    x = 39,191.18/166.65
  6. Step 6: Final answer
    x = 235.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.