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Finding the Fourth Proportional to 835.26, 1,253.06 and 287.52

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Solution

The fourth proportional to 835.26, 1,253.06 and 287.52 is: 431.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.26 : 1,253.06 = 287.52 : x
  2. Step 2: Convert to fraction form
    835.26/1,253.06 = 287.52/x
  3. Step 3: Cross multiply
    835.26x = 1,253.06 × 287.52
  4. Step 4: Simplify right side
    835.26x = 360,279.81
  5. Step 5: Solve for x
    x = 360,279.81/835.26
  6. Step 6: Final answer
    x = 431.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.