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Finding the Fourth Proportional to 699.70, 964.84 and 450.82

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Solution

The fourth proportional to 699.70, 964.84 and 450.82 is: 621.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.70 : 964.84 = 450.82 : x
  2. Step 2: Convert to fraction form
    699.70/964.84 = 450.82/x
  3. Step 3: Cross multiply
    699.70x = 964.84 × 450.82
  4. Step 4: Simplify right side
    699.70x = 434,969.17
  5. Step 5: Solve for x
    x = 434,969.17/699.70
  6. Step 6: Final answer
    x = 621.65

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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.