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Finding the Fourth Proportional to 364.15, 546.02 and 120.61

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Solution

The fourth proportional to 364.15, 546.02 and 120.61 is: 180.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.15 : 546.02 = 120.61 : x
  2. Step 2: Convert to fraction form
    364.15/546.02 = 120.61/x
  3. Step 3: Cross multiply
    364.15x = 546.02 × 120.61
  4. Step 4: Simplify right side
    364.15x = 65,854.87
  5. Step 5: Solve for x
    x = 65,854.87/364.15
  6. Step 6: Final answer
    x = 180.85

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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.