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Finding the Fourth Proportional to 364.97, 547.54 and 121.66

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Solution

The fourth proportional to 364.97, 547.54 and 121.66 is: 182.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.97 : 547.54 = 121.66 : x
  2. Step 2: Convert to fraction form
    364.97/547.54 = 121.66/x
  3. Step 3: Cross multiply
    364.97x = 547.54 × 121.66
  4. Step 4: Simplify right side
    364.97x = 66,612.04
  5. Step 5: Solve for x
    x = 66,612.04/364.97
  6. Step 6: Final answer
    x = 182.51

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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.