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Finding the Fourth Proportional to 901.04, 1,241.60 and 691.22

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Solution

The fourth proportional to 901.04, 1,241.60 and 691.22 is: 952.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.04 : 1,241.60 = 691.22 : x
  2. Step 2: Convert to fraction form
    901.04/1,241.60 = 691.22/x
  3. Step 3: Cross multiply
    901.04x = 1,241.60 × 691.22
  4. Step 4: Simplify right side
    901.04x = 858,218.75
  5. Step 5: Solve for x
    x = 858,218.75/901.04
  6. Step 6: Final answer
    x = 952.48

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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.