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Finding the Fourth Proportional to 907.10, 1,251.86 and 575.61

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Solution

The fourth proportional to 907.10, 1,251.86 and 575.61 is: 794.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.10 : 1,251.86 = 575.61 : x
  2. Step 2: Convert to fraction form
    907.10/1,251.86 = 575.61/x
  3. Step 3: Cross multiply
    907.10x = 1,251.86 × 575.61
  4. Step 4: Simplify right side
    907.10x = 720,575.56
  5. Step 5: Solve for x
    x = 720,575.56/907.10
  6. Step 6: Final answer
    x = 794.37

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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.