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Finding the Fourth Proportional to 1,049.36, 1,448.24 and 677.42

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Solution

The fourth proportional to 1,049.36, 1,448.24 and 677.42 is: 934.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.36 : 1,448.24 = 677.42 : x
  2. Step 2: Convert to fraction form
    1,049.36/1,448.24 = 677.42/x
  3. Step 3: Cross multiply
    1,049.36x = 1,448.24 × 677.42
  4. Step 4: Simplify right side
    1,049.36x = 981,066.74
  5. Step 5: Solve for x
    x = 981,066.74/1,049.36
  6. Step 6: Final answer
    x = 934.92

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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.