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Finding the Fourth Proportional to 920.41, 1,268.92 and 625.16

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Solution

The fourth proportional to 920.41, 1,268.92 and 625.16 is: 861.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    920.41 : 1,268.92 = 625.16 : x
  2. Step 2: Convert to fraction form
    920.41/1,268.92 = 625.16/x
  3. Step 3: Cross multiply
    920.41x = 1,268.92 × 625.16
  4. Step 4: Simplify right side
    920.41x = 793,278.03
  5. Step 5: Solve for x
    x = 793,278.03/920.41
  6. Step 6: Final answer
    x = 861.88

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.