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Finding the Fourth Proportional to 902.38, 1,244.19 and 762.25

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Solution

The fourth proportional to 902.38, 1,244.19 and 762.25 is: 1,050.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.38 : 1,244.19 = 762.25 : x
  2. Step 2: Convert to fraction form
    902.38/1,244.19 = 762.25/x
  3. Step 3: Cross multiply
    902.38x = 1,244.19 × 762.25
  4. Step 4: Simplify right side
    902.38x = 948,383.83
  5. Step 5: Solve for x
    x = 948,383.83/902.38
  6. Step 6: Final answer
    x = 1,050.98

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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.