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Finding the Fourth Proportional to 219.27, 302.60 and 121.02

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Solution

The fourth proportional to 219.27, 302.60 and 121.02 is: 167.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.27 : 302.60 = 121.02 : x
  2. Step 2: Convert to fraction form
    219.27/302.60 = 121.02/x
  3. Step 3: Cross multiply
    219.27x = 302.60 × 121.02
  4. Step 4: Simplify right side
    219.27x = 36,620.05
  5. Step 5: Solve for x
    x = 36,620.05/219.27
  6. Step 6: Final answer
    x = 167.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.