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Finding the Fourth Proportional to 1,067.34, 1,472.76 and 625.17

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Solution

The fourth proportional to 1,067.34, 1,472.76 and 625.17 is: 862.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,067.34 : 1,472.76 = 625.17 : x
  2. Step 2: Convert to fraction form
    1,067.34/1,472.76 = 625.17/x
  3. Step 3: Cross multiply
    1,067.34x = 1,472.76 × 625.17
  4. Step 4: Simplify right side
    1,067.34x = 920,725.37
  5. Step 5: Solve for x
    x = 920,725.37/1,067.34
  6. Step 6: Final answer
    x = 862.64

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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.