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Finding the Fourth Proportional to 835.51, 1,253.32 and 219.23

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Solution

The fourth proportional to 835.51, 1,253.32 and 219.23 is: 328.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.51 : 1,253.32 = 219.23 : x
  2. Step 2: Convert to fraction form
    835.51/1,253.32 = 219.23/x
  3. Step 3: Cross multiply
    835.51x = 1,253.32 × 219.23
  4. Step 4: Simplify right side
    835.51x = 274,765.34
  5. Step 5: Solve for x
    x = 274,765.34/835.51
  6. Step 6: Final answer
    x = 328.86

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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.