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Finding the Fourth Proportional to 698.84, 964.11 and 450.12

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Solution

The fourth proportional to 698.84, 964.11 and 450.12 is: 620.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    698.84 : 964.11 = 450.12 : x
  2. Step 2: Convert to fraction form
    698.84/964.11 = 450.12/x
  3. Step 3: Cross multiply
    698.84x = 964.11 × 450.12
  4. Step 4: Simplify right side
    698.84x = 433,965.19
  5. Step 5: Solve for x
    x = 433,965.19/698.84
  6. Step 6: Final answer
    x = 620.98

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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.