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Finding the Fourth Proportional to 372.42, 513.50 and 330.37

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Solution

The fourth proportional to 372.42, 513.50 and 330.37 is: 455.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.42 : 513.50 = 330.37 : x
  2. Step 2: Convert to fraction form
    372.42/513.50 = 330.37/x
  3. Step 3: Cross multiply
    372.42x = 513.50 × 330.37
  4. Step 4: Simplify right side
    372.42x = 169,645.00
  5. Step 5: Solve for x
    x = 169,645.00/372.42
  6. Step 6: Final answer
    x = 455.52

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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.