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Finding the Fourth Proportional to 698.80, 964.24 and 450.46

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Solution

The fourth proportional to 698.80, 964.24 and 450.46 is: 621.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    698.80 : 964.24 = 450.46 : x
  2. Step 2: Convert to fraction form
    698.80/964.24 = 450.46/x
  3. Step 3: Cross multiply
    698.80x = 964.24 × 450.46
  4. Step 4: Simplify right side
    698.80x = 434,351.55
  5. Step 5: Solve for x
    x = 434,351.55/698.80
  6. Step 6: Final answer
    x = 621.57

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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.