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Finding the Fourth Proportional to 445.85, 614.55 and 352.43

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Solution

The fourth proportional to 445.85, 614.55 and 352.43 is: 485.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.85 : 614.55 = 352.43 : x
  2. Step 2: Convert to fraction form
    445.85/614.55 = 352.43/x
  3. Step 3: Cross multiply
    445.85x = 614.55 × 352.43
  4. Step 4: Simplify right side
    445.85x = 216,585.86
  5. Step 5: Solve for x
    x = 216,585.86/445.85
  6. Step 6: Final answer
    x = 485.78

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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.