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Finding the Fourth Proportional to 999.20, 1,377.32 and 750.16

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Solution

The fourth proportional to 999.20, 1,377.32 and 750.16 is: 1,034.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    999.20 : 1,377.32 = 750.16 : x
  2. Step 2: Convert to fraction form
    999.20/1,377.32 = 750.16/x
  3. Step 3: Cross multiply
    999.20x = 1,377.32 × 750.16
  4. Step 4: Simplify right side
    999.20x = 1,033,210.37
  5. Step 5: Solve for x
    x = 1,033,210.37/999.20
  6. Step 6: Final answer
    x = 1,034.04

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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.