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Finding the Fourth Proportional to 1,654.78, 2,283.49 and 908.67

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Solution

The fourth proportional to 1,654.78, 2,283.49 and 908.67 is: 1,253.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,654.78 : 2,283.49 = 908.67 : x
  2. Step 2: Convert to fraction form
    1,654.78/2,283.49 = 908.67/x
  3. Step 3: Cross multiply
    1,654.78x = 2,283.49 × 908.67
  4. Step 4: Simplify right side
    1,654.78x = 2,074,935.71
  5. Step 5: Solve for x
    x = 2,074,935.71/1,654.78
  6. Step 6: Final answer
    x = 1,253.90

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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.