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Finding the Fourth Proportional to 663.15, 993.11 and 446.07

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Solution

The fourth proportional to 663.15, 993.11 and 446.07 is: 668.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.15 : 993.11 = 446.07 : x
  2. Step 2: Convert to fraction form
    663.15/993.11 = 446.07/x
  3. Step 3: Cross multiply
    663.15x = 993.11 × 446.07
  4. Step 4: Simplify right side
    663.15x = 442,994.35
  5. Step 5: Solve for x
    x = 442,994.35/663.15
  6. Step 6: Final answer
    x = 668.02

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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.