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Finding the Fourth Proportional to 1,067.35, 1,473 and 625.29

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Solution

The fourth proportional to 1,067.35, 1,473 and 625.29 is: 862.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,067.35 : 1,473 = 625.29 : x
  2. Step 2: Convert to fraction form
    1,067.35/1,473 = 625.29/x
  3. Step 3: Cross multiply
    1,067.35x = 1,473 × 625.29
  4. Step 4: Simplify right side
    1,067.35x = 921,052.17
  5. Step 5: Solve for x
    x = 921,052.17/1,067.35
  6. Step 6: Final answer
    x = 862.93

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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.