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Finding the Fourth Proportional to 240.28, 358.56 and 238.48

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Solution

The fourth proportional to 240.28, 358.56 and 238.48 is: 355.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.28 : 358.56 = 238.48 : x
  2. Step 2: Convert to fraction form
    240.28/358.56 = 238.48/x
  3. Step 3: Cross multiply
    240.28x = 358.56 × 238.48
  4. Step 4: Simplify right side
    240.28x = 85,509.39
  5. Step 5: Solve for x
    x = 85,509.39/240.28
  6. Step 6: Final answer
    x = 355.87

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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.