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Finding the Fourth Proportional to 1,654.22, 2,282.78 and 908.18

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Solution

The fourth proportional to 1,654.22, 2,282.78 and 908.18 is: 1,253.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,654.22 : 2,282.78 = 908.18 : x
  2. Step 2: Convert to fraction form
    1,654.22/2,282.78 = 908.18/x
  3. Step 3: Cross multiply
    1,654.22x = 2,282.78 × 908.18
  4. Step 4: Simplify right side
    1,654.22x = 2,073,166.00
  5. Step 5: Solve for x
    x = 2,073,166.00/1,654.22
  6. Step 6: Final answer
    x = 1,253.26

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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.