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Finding the Fourth Proportional to 445.89, 614.88 and 372.18

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Solution

The fourth proportional to 445.89, 614.88 and 372.18 is: 513.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.89 : 614.88 = 372.18 : x
  2. Step 2: Convert to fraction form
    445.89/614.88 = 372.18/x
  3. Step 3: Cross multiply
    445.89x = 614.88 × 372.18
  4. Step 4: Simplify right side
    445.89x = 228,846.04
  5. Step 5: Solve for x
    x = 228,846.04/445.89
  6. Step 6: Final answer
    x = 513.23

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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.