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Finding the Fourth Proportional to 800.32, 1,104.65 and 717.28

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Solution

The fourth proportional to 800.32, 1,104.65 and 717.28 is: 990.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.32 : 1,104.65 = 717.28 : x
  2. Step 2: Convert to fraction form
    800.32/1,104.65 = 717.28/x
  3. Step 3: Cross multiply
    800.32x = 1,104.65 × 717.28
  4. Step 4: Simplify right side
    800.32x = 792,343.81
  5. Step 5: Solve for x
    x = 792,343.81/800.32
  6. Step 6: Final answer
    x = 990.04

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1.5x scale

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.