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Finding the Fourth Proportional to 219.20, 302.56 and 175.52

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Solution

The fourth proportional to 219.20, 302.56 and 175.52 is: 242.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.20 : 302.56 = 175.52 : x
  2. Step 2: Convert to fraction form
    219.20/302.56 = 175.52/x
  3. Step 3: Cross multiply
    219.20x = 302.56 × 175.52
  4. Step 4: Simplify right side
    219.20x = 53,105.33
  5. Step 5: Solve for x
    x = 53,105.33/219.20
  6. Step 6: Final answer
    x = 242.27

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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.