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Finding the Fourth Proportional to 768.06, 1,152.07 and 248.09

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Solution

The fourth proportional to 768.06, 1,152.07 and 248.09 is: 372.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    768.06 : 1,152.07 = 248.09 : x
  2. Step 2: Convert to fraction form
    768.06/1,152.07 = 248.09/x
  3. Step 3: Cross multiply
    768.06x = 1,152.07 × 248.09
  4. Step 4: Simplify right side
    768.06x = 285,815.30
  5. Step 5: Solve for x
    x = 285,815.30/768.06
  6. Step 6: Final answer
    x = 372.13

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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.