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Finding the Fourth Proportional to 1,241.68, 1,713.61 and 682.14

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Solution

The fourth proportional to 1,241.68, 1,713.61 and 682.14 is: 941.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241.68 : 1,713.61 = 682.14 : x
  2. Step 2: Convert to fraction form
    1,241.68/1,713.61 = 682.14/x
  3. Step 3: Cross multiply
    1,241.68x = 1,713.61 × 682.14
  4. Step 4: Simplify right side
    1,241.68x = 1,168,921.93
  5. Step 5: Solve for x
    x = 1,168,921.93/1,241.68
  6. Step 6: Final answer
    x = 941.40

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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.