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Finding the Fourth Proportional to 698.91, 969.10 and 675.78

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Solution

The fourth proportional to 698.91, 969.10 and 675.78 is: 937.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    698.91 : 969.10 = 675.78 : x
  2. Step 2: Convert to fraction form
    698.91/969.10 = 675.78/x
  3. Step 3: Cross multiply
    698.91x = 969.10 × 675.78
  4. Step 4: Simplify right side
    698.91x = 654,898.40
  5. Step 5: Solve for x
    x = 654,898.40/698.91
  6. Step 6: Final answer
    x = 937.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.