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Finding the Fourth Proportional to 247.94, 374.72 and 243.68

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Solution

The fourth proportional to 247.94, 374.72 and 243.68 is: 368.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.94 : 374.72 = 243.68 : x
  2. Step 2: Convert to fraction form
    247.94/374.72 = 243.68/x
  3. Step 3: Cross multiply
    247.94x = 374.72 × 243.68
  4. Step 4: Simplify right side
    247.94x = 91,311.77
  5. Step 5: Solve for x
    x = 91,311.77/247.94
  6. Step 6: Final answer
    x = 368.28

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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.