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Finding the Fourth Proportional to 1,613.40, 2,226.42 and 950.28

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Solution

The fourth proportional to 1,613.40, 2,226.42 and 950.28 is: 1,311.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,613.40 : 2,226.42 = 950.28 : x
  2. Step 2: Convert to fraction form
    1,613.40/2,226.42 = 950.28/x
  3. Step 3: Cross multiply
    1,613.40x = 2,226.42 × 950.28
  4. Step 4: Simplify right side
    1,613.40x = 2,115,720.40
  5. Step 5: Solve for x
    x = 2,115,720.40/1,613.40
  6. Step 6: Final answer
    x = 1,311.34

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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.