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Finding the Fourth Proportional to 1,729.38, 2,595.06 and 908.40

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Solution

The fourth proportional to 1,729.38, 2,595.06 and 908.40 is: 1,363.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.38 : 2,595.06 = 908.40 : x
  2. Step 2: Convert to fraction form
    1,729.38/2,595.06 = 908.40/x
  3. Step 3: Cross multiply
    1,729.38x = 2,595.06 × 908.40
  4. Step 4: Simplify right side
    1,729.38x = 2,357,352.50
  5. Step 5: Solve for x
    x = 2,357,352.50/1,729.38
  6. Step 6: Final answer
    x = 1,363.12

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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.