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Finding the Fourth Proportional to 445.52, 614.88 and 371.72

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Solution

The fourth proportional to 445.52, 614.88 and 371.72 is: 513.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.52 : 614.88 = 371.72 : x
  2. Step 2: Convert to fraction form
    445.52/614.88 = 371.72/x
  3. Step 3: Cross multiply
    445.52x = 614.88 × 371.72
  4. Step 4: Simplify right side
    445.52x = 228,563.19
  5. Step 5: Solve for x
    x = 228,563.19/445.52
  6. Step 6: Final answer
    x = 513.03

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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.