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Finding the Fourth Proportional to 532.30, 798.55 and 219.95

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Solution

The fourth proportional to 532.30, 798.55 and 219.95 is: 329.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    532.30 : 798.55 = 219.95 : x
  2. Step 2: Convert to fraction form
    532.30/798.55 = 219.95/x
  3. Step 3: Cross multiply
    532.30x = 798.55 × 219.95
  4. Step 4: Simplify right side
    532.30x = 175,640.96
  5. Step 5: Solve for x
    x = 175,640.96/532.30
  6. Step 6: Final answer
    x = 329.96

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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.