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Finding the Fourth Proportional to 1,684.46, 2,527.97 and 905.10

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Solution

The fourth proportional to 1,684.46, 2,527.97 and 905.10 is: 1,358.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684.46 : 2,527.97 = 905.10 : x
  2. Step 2: Convert to fraction form
    1,684.46/2,527.97 = 905.10/x
  3. Step 3: Cross multiply
    1,684.46x = 2,527.97 × 905.10
  4. Step 4: Simplify right side
    1,684.46x = 2,288,065.65
  5. Step 5: Solve for x
    x = 2,288,065.65/1,684.46
  6. Step 6: Final answer
    x = 1,358.34

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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.