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Finding the Fourth Proportional to 1,633.98, 2,451.81 and 812.24

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Solution

The fourth proportional to 1,633.98, 2,451.81 and 812.24 is: 1,218.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,633.98 : 2,451.81 = 812.24 : x
  2. Step 2: Convert to fraction form
    1,633.98/2,451.81 = 812.24/x
  3. Step 3: Cross multiply
    1,633.98x = 2,451.81 × 812.24
  4. Step 4: Simplify right side
    1,633.98x = 1,991,445.90
  5. Step 5: Solve for x
    x = 1,991,445.90/1,633.98
  6. Step 6: Final answer
    x = 1,218.77

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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.