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Finding the Fourth Proportional to 370, 511.50 and 326.20

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Solution

The fourth proportional to 370, 511.50 and 326.20 is: 450.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    370 : 511.50 = 326.20 : x
  2. Step 2: Convert to fraction form
    370/511.50 = 326.20/x
  3. Step 3: Cross multiply
    370x = 511.50 × 326.20
  4. Step 4: Simplify right side
    370x = 166,851.30
  5. Step 5: Solve for x
    x = 166,851.30/370
  6. Step 6: Final answer
    x = 450.95

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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.