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Finding the Fourth Proportional to 1,241.97, 1,862.96 and 317.53

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Solution

The fourth proportional to 1,241.97, 1,862.96 and 317.53 is: 476.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241.97 : 1,862.96 = 317.53 : x
  2. Step 2: Convert to fraction form
    1,241.97/1,862.96 = 317.53/x
  3. Step 3: Cross multiply
    1,241.97x = 1,862.96 × 317.53
  4. Step 4: Simplify right side
    1,241.97x = 591,551.71
  5. Step 5: Solve for x
    x = 591,551.71/1,241.97
  6. Step 6: Final answer
    x = 476.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.