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Finding the Fourth Proportional to 376.57, 564.86 and 247.39

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Solution

The fourth proportional to 376.57, 564.86 and 247.39 is: 371.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.57 : 564.86 = 247.39 : x
  2. Step 2: Convert to fraction form
    376.57/564.86 = 247.39/x
  3. Step 3: Cross multiply
    376.57x = 564.86 × 247.39
  4. Step 4: Simplify right side
    376.57x = 139,743.10
  5. Step 5: Solve for x
    x = 139,743.10/376.57
  6. Step 6: Final answer
    x = 371.09

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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.