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Finding the Fourth Proportional to 581.48, 872.27 and 191.47

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Solution

The fourth proportional to 581.48, 872.27 and 191.47 is: 287.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.48 : 872.27 = 191.47 : x
  2. Step 2: Convert to fraction form
    581.48/872.27 = 191.47/x
  3. Step 3: Cross multiply
    581.48x = 872.27 × 191.47
  4. Step 4: Simplify right side
    581.48x = 167,013.54
  5. Step 5: Solve for x
    x = 167,013.54/581.48
  6. Step 6: Final answer
    x = 287.22

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Double scale
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Similar ratio
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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.