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Finding the Fourth Proportional to 445.93, 615.75 and 372.64

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Solution

The fourth proportional to 445.93, 615.75 and 372.64 is: 514.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.93 : 615.75 = 372.64 : x
  2. Step 2: Convert to fraction form
    445.93/615.75 = 372.64/x
  3. Step 3: Cross multiply
    445.93x = 615.75 × 372.64
  4. Step 4: Simplify right side
    445.93x = 229,453.08
  5. Step 5: Solve for x
    x = 229,453.08/445.93
  6. Step 6: Final answer
    x = 514.55

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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.