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Finding the Fourth Proportional to 534.12, 799.61 and 328.06

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Solution

The fourth proportional to 534.12, 799.61 and 328.06 is: 491.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.12 : 799.61 = 328.06 : x
  2. Step 2: Convert to fraction form
    534.12/799.61 = 328.06/x
  3. Step 3: Cross multiply
    534.12x = 799.61 × 328.06
  4. Step 4: Simplify right side
    534.12x = 262,316.06
  5. Step 5: Solve for x
    x = 262,316.06/534.12
  6. Step 6: Final answer
    x = 491.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.