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Finding the Fourth Proportional to 903.38, 1,245.56 and 763.26

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Solution

The fourth proportional to 903.38, 1,245.56 and 763.26 is: 1,052.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.38 : 1,245.56 = 763.26 : x
  2. Step 2: Convert to fraction form
    903.38/1,245.56 = 763.26/x
  3. Step 3: Cross multiply
    903.38x = 1,245.56 × 763.26
  4. Step 4: Simplify right side
    903.38x = 950,686.13
  5. Step 5: Solve for x
    x = 950,686.13/903.38
  6. Step 6: Final answer
    x = 1,052.37

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Double scale
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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.