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Finding the Fourth Proportional to 161.04, 242.49 and 146.15

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Solution

The fourth proportional to 161.04, 242.49 and 146.15 is: 220.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.04 : 242.49 = 146.15 : x
  2. Step 2: Convert to fraction form
    161.04/242.49 = 146.15/x
  3. Step 3: Cross multiply
    161.04x = 242.49 × 146.15
  4. Step 4: Simplify right side
    161.04x = 35,438.70
  5. Step 5: Solve for x
    x = 35,438.70/161.04
  6. Step 6: Final answer
    x = 220.06

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.