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Finding the Fourth Proportional to 247.76, 373.56 and 217.24

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Solution

The fourth proportional to 247.76, 373.56 and 217.24 is: 327.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.76 : 373.56 = 217.24 : x
  2. Step 2: Convert to fraction form
    247.76/373.56 = 217.24/x
  3. Step 3: Cross multiply
    247.76x = 373.56 × 217.24
  4. Step 4: Simplify right side
    247.76x = 81,152.17
  5. Step 5: Solve for x
    x = 81,152.17/247.76
  6. Step 6: Final answer
    x = 327.54

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.