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Finding the Fourth Proportional to 581.90, 872.30 and 196.88

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Solution

The fourth proportional to 581.90, 872.30 and 196.88 is: 295.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.90 : 872.30 = 196.88 : x
  2. Step 2: Convert to fraction form
    581.90/872.30 = 196.88/x
  3. Step 3: Cross multiply
    581.90x = 872.30 × 196.88
  4. Step 4: Simplify right side
    581.90x = 171,734.55
  5. Step 5: Solve for x
    x = 171,734.55/581.90
  6. Step 6: Final answer
    x = 295.13

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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.