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Finding the Fourth Proportional to 372.75, 513.92 and 303.15

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Solution

The fourth proportional to 372.75, 513.92 and 303.15 is: 417.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.75 : 513.92 = 303.15 : x
  2. Step 2: Convert to fraction form
    372.75/513.92 = 303.15/x
  3. Step 3: Cross multiply
    372.75x = 513.92 × 303.15
  4. Step 4: Simplify right side
    372.75x = 155,793.33
  5. Step 5: Solve for x
    x = 155,793.33/372.75
  6. Step 6: Final answer
    x = 417.96

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Find fourth proportional to 186.38, 256.96 and 151.58
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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.