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Finding the Fourth Proportional to 219.29, 302.43 and 160.28

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Solution

The fourth proportional to 219.29, 302.43 and 160.28 is: 221.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.29 : 302.43 = 160.28 : x
  2. Step 2: Convert to fraction form
    219.29/302.43 = 160.28/x
  3. Step 3: Cross multiply
    219.29x = 302.43 × 160.28
  4. Step 4: Simplify right side
    219.29x = 48,471.97
  5. Step 5: Solve for x
    x = 48,471.97/219.29
  6. Step 6: Final answer
    x = 221.05

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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.