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Finding the Fourth Proportional to 247.46, 368.86 and 239.60

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Solution

The fourth proportional to 247.46, 368.86 and 239.60 is: 357.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.46 : 368.86 = 239.60 : x
  2. Step 2: Convert to fraction form
    247.46/368.86 = 239.60/x
  3. Step 3: Cross multiply
    247.46x = 368.86 × 239.60
  4. Step 4: Simplify right side
    247.46x = 88,378.86
  5. Step 5: Solve for x
    x = 88,378.86/247.46
  6. Step 6: Final answer
    x = 357.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.