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Finding the Fourth Proportional to 1,072.72, 1,480.28 and 600.64

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Solution

The fourth proportional to 1,072.72, 1,480.28 and 600.64 is: 828.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,072.72 : 1,480.28 = 600.64 : x
  2. Step 2: Convert to fraction form
    1,072.72/1,480.28 = 600.64/x
  3. Step 3: Cross multiply
    1,072.72x = 1,480.28 × 600.64
  4. Step 4: Simplify right side
    1,072.72x = 889,115.38
  5. Step 5: Solve for x
    x = 889,115.38/1,072.72
  6. Step 6: Final answer
    x = 828.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.