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Finding the Fourth Proportional to 699.59, 965.54 and 404.96

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Solution

The fourth proportional to 699.59, 965.54 and 404.96 is: 558.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.59 : 965.54 = 404.96 : x
  2. Step 2: Convert to fraction form
    699.59/965.54 = 404.96/x
  3. Step 3: Cross multiply
    699.59x = 965.54 × 404.96
  4. Step 4: Simplify right side
    699.59x = 390,998.23
  5. Step 5: Solve for x
    x = 390,998.23/699.59
  6. Step 6: Final answer
    x = 558.90

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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.