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Finding the Fourth Proportional to 161.55, 242.51 and 144.54

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Solution

The fourth proportional to 161.55, 242.51 and 144.54 is: 216.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.55 : 242.51 = 144.54 : x
  2. Step 2: Convert to fraction form
    161.55/242.51 = 144.54/x
  3. Step 3: Cross multiply
    161.55x = 242.51 × 144.54
  4. Step 4: Simplify right side
    161.55x = 35,051.67
  5. Step 5: Solve for x
    x = 35,051.67/161.55
  6. Step 6: Final answer
    x = 216.97

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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.