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Finding the Fourth Proportional to 364.67, 547.09 and 121.19

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Solution

The fourth proportional to 364.67, 547.09 and 121.19 is: 181.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.67 : 547.09 = 121.19 : x
  2. Step 2: Convert to fraction form
    364.67/547.09 = 121.19/x
  3. Step 3: Cross multiply
    364.67x = 547.09 × 121.19
  4. Step 4: Simplify right side
    364.67x = 66,302.90
  5. Step 5: Solve for x
    x = 66,302.90/364.67
  6. Step 6: Final answer
    x = 181.82

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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.