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Finding the Fourth Proportional to 837.48, 1,254.86 and 511.86

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Solution

The fourth proportional to 837.48, 1,254.86 and 511.86 is: 766.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.48 : 1,254.86 = 511.86 : x
  2. Step 2: Convert to fraction form
    837.48/1,254.86 = 511.86/x
  3. Step 3: Cross multiply
    837.48x = 1,254.86 × 511.86
  4. Step 4: Simplify right side
    837.48x = 642,312.64
  5. Step 5: Solve for x
    x = 642,312.64/837.48
  6. Step 6: Final answer
    x = 766.96

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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.