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Finding the Fourth Proportional to 161.43, 240.48 and 153.69

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Solution

The fourth proportional to 161.43, 240.48 and 153.69 is: 228.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.43 : 240.48 = 153.69 : x
  2. Step 2: Convert to fraction form
    161.43/240.48 = 153.69/x
  3. Step 3: Cross multiply
    161.43x = 240.48 × 153.69
  4. Step 4: Simplify right side
    161.43x = 36,958.17
  5. Step 5: Solve for x
    x = 36,958.17/161.43
  6. Step 6: Final answer
    x = 228.95

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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.