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Finding the Fourth Proportional to 699.82, 965.72 and 437.98

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Solution

The fourth proportional to 699.82, 965.72 and 437.98 is: 604.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.82 : 965.72 = 437.98 : x
  2. Step 2: Convert to fraction form
    699.82/965.72 = 437.98/x
  3. Step 3: Cross multiply
    699.82x = 965.72 × 437.98
  4. Step 4: Simplify right side
    699.82x = 422,966.05
  5. Step 5: Solve for x
    x = 422,966.05/699.82
  6. Step 6: Final answer
    x = 604.39

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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.