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Finding the Fourth Proportional to 445.11, 616.67 and 436.47

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Solution

The fourth proportional to 445.11, 616.67 and 436.47 is: 604.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.11 : 616.67 = 436.47 : x
  2. Step 2: Convert to fraction form
    445.11/616.67 = 436.47/x
  3. Step 3: Cross multiply
    445.11x = 616.67 × 436.47
  4. Step 4: Simplify right side
    445.11x = 269,159.05
  5. Step 5: Solve for x
    x = 269,159.05/445.11
  6. Step 6: Final answer
    x = 604.70

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.