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Finding the Fourth Proportional to 219.47, 302.88 and 126.22

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Solution

The fourth proportional to 219.47, 302.88 and 126.22 is: 174.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.47 : 302.88 = 126.22 : x
  2. Step 2: Convert to fraction form
    219.47/302.88 = 126.22/x
  3. Step 3: Cross multiply
    219.47x = 302.88 × 126.22
  4. Step 4: Simplify right side
    219.47x = 38,228.00
  5. Step 5: Solve for x
    x = 38,228.00/219.47
  6. Step 6: Final answer
    x = 174.18

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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.