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Finding the Fourth Proportional to 833.67, 1,251.12 and 314.18

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Solution

The fourth proportional to 833.67, 1,251.12 and 314.18 is: 471.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.67 : 1,251.12 = 314.18 : x
  2. Step 2: Convert to fraction form
    833.67/1,251.12 = 314.18/x
  3. Step 3: Cross multiply
    833.67x = 1,251.12 × 314.18
  4. Step 4: Simplify right side
    833.67x = 393,076.50
  5. Step 5: Solve for x
    x = 393,076.50/833.67
  6. Step 6: Final answer
    x = 471.50

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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.