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Finding the Fourth Proportional to 1,304.32, 1,798.40 and 1,067.40

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Solution

The fourth proportional to 1,304.32, 1,798.40 and 1,067.40 is: 1,471.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,304.32 : 1,798.40 = 1,067.40 : x
  2. Step 2: Convert to fraction form
    1,304.32/1,798.40 = 1,067.40/x
  3. Step 3: Cross multiply
    1,304.32x = 1,798.40 × 1,067.40
  4. Step 4: Simplify right side
    1,304.32x = 1,919,612.16
  5. Step 5: Solve for x
    x = 1,919,612.16/1,304.32
  6. Step 6: Final answer
    x = 1,471.73

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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.