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Finding the Fourth Proportional to 150.23, 206.69 and 117.42

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Solution

The fourth proportional to 150.23, 206.69 and 117.42 is: 161.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.23 : 206.69 = 117.42 : x
  2. Step 2: Convert to fraction form
    150.23/206.69 = 117.42/x
  3. Step 3: Cross multiply
    150.23x = 206.69 × 117.42
  4. Step 4: Simplify right side
    150.23x = 24,268.95
  5. Step 5: Solve for x
    x = 24,268.95/150.23
  6. Step 6: Final answer
    x = 161.55

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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.