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Finding the Fourth Proportional to 665.95, 996.25 and 575.62

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Solution

The fourth proportional to 665.95, 996.25 and 575.62 is: 861.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.95 : 996.25 = 575.62 : x
  2. Step 2: Convert to fraction form
    665.95/996.25 = 575.62/x
  3. Step 3: Cross multiply
    665.95x = 996.25 × 575.62
  4. Step 4: Simplify right side
    665.95x = 573,461.43
  5. Step 5: Solve for x
    x = 573,461.43/665.95
  6. Step 6: Final answer
    x = 861.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.