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Finding the Fourth Proportional to 174.48, 240.30 and 161.50

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Solution

The fourth proportional to 174.48, 240.30 and 161.50 is: 222.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.48 : 240.30 = 161.50 : x
  2. Step 2: Convert to fraction form
    174.48/240.30 = 161.50/x
  3. Step 3: Cross multiply
    174.48x = 240.30 × 161.50
  4. Step 4: Simplify right side
    174.48x = 38,808.45
  5. Step 5: Solve for x
    x = 38,808.45/174.48
  6. Step 6: Final answer
    x = 222.42

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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.