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Finding the Fourth Proportional to 240.72, 360.48 and 200.28

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Solution

The fourth proportional to 240.72, 360.48 and 200.28 is: 299.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.72 : 360.48 = 200.28 : x
  2. Step 2: Convert to fraction form
    240.72/360.48 = 200.28/x
  3. Step 3: Cross multiply
    240.72x = 360.48 × 200.28
  4. Step 4: Simplify right side
    240.72x = 72,196.93
  5. Step 5: Solve for x
    x = 72,196.93/240.72
  6. Step 6: Final answer
    x = 299.92

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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.