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Finding the Fourth Proportional to 581.56, 871.74 and 196.60

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Solution

The fourth proportional to 581.56, 871.74 and 196.60 is: 294.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.56 : 871.74 = 196.60 : x
  2. Step 2: Convert to fraction form
    581.56/871.74 = 196.60/x
  3. Step 3: Cross multiply
    581.56x = 871.74 × 196.60
  4. Step 4: Simplify right side
    581.56x = 171,384.08
  5. Step 5: Solve for x
    x = 171,384.08/581.56
  6. Step 6: Final answer
    x = 294.70

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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.