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Finding the Fourth Proportional to 835.89, 1,254.26 and 342.66

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Solution

The fourth proportional to 835.89, 1,254.26 and 342.66 is: 514.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.89 : 1,254.26 = 342.66 : x
  2. Step 2: Convert to fraction form
    835.89/1,254.26 = 342.66/x
  3. Step 3: Cross multiply
    835.89x = 1,254.26 × 342.66
  4. Step 4: Simplify right side
    835.89x = 429,780.88
  5. Step 5: Solve for x
    x = 429,780.88/835.89
  6. Step 6: Final answer
    x = 514.16

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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.