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Finding the Fourth Proportional to 1,445.97, 2,169.63 and 752.27

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Solution

The fourth proportional to 1,445.97, 2,169.63 and 752.27 is: 1,128.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.97 : 2,169.63 = 752.27 : x
  2. Step 2: Convert to fraction form
    1,445.97/2,169.63 = 752.27/x
  3. Step 3: Cross multiply
    1,445.97x = 2,169.63 × 752.27
  4. Step 4: Simplify right side
    1,445.97x = 1,632,152.98
  5. Step 5: Solve for x
    x = 1,632,152.98/1,445.97
  6. Step 6: Final answer
    x = 1,128.76

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1.5x scale

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.