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Finding the Fourth Proportional to 936.95, 1,294.30 and 676.33

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Solution

The fourth proportional to 936.95, 1,294.30 and 676.33 is: 934.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.95 : 1,294.30 = 676.33 : x
  2. Step 2: Convert to fraction form
    936.95/1,294.30 = 676.33/x
  3. Step 3: Cross multiply
    936.95x = 1,294.30 × 676.33
  4. Step 4: Simplify right side
    936.95x = 875,380.71
  5. Step 5: Solve for x
    x = 875,380.71/936.95
  6. Step 6: Final answer
    x = 934.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.