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Finding the Fourth Proportional to 768.27, 1,152.33 and 248.29

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Solution

The fourth proportional to 768.27, 1,152.33 and 248.29 is: 372.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    768.27 : 1,152.33 = 248.29 : x
  2. Step 2: Convert to fraction form
    768.27/1,152.33 = 248.29/x
  3. Step 3: Cross multiply
    768.27x = 1,152.33 × 248.29
  4. Step 4: Simplify right side
    768.27x = 286,112.02
  5. Step 5: Solve for x
    x = 286,112.02/768.27
  6. Step 6: Final answer
    x = 372.41

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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.