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Finding the Fourth Proportional to 372.05, 511.19 and 330.53

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Solution

The fourth proportional to 372.05, 511.19 and 330.53 is: 454.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.05 : 511.19 = 330.53 : x
  2. Step 2: Convert to fraction form
    372.05/511.19 = 330.53/x
  3. Step 3: Cross multiply
    372.05x = 511.19 × 330.53
  4. Step 4: Simplify right side
    372.05x = 168,959.42
  5. Step 5: Solve for x
    x = 168,959.42/372.05
  6. Step 6: Final answer
    x = 454.14

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.