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Finding the Fourth Proportional to 539.04, 742.80 and 352.32

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Solution

The fourth proportional to 539.04, 742.80 and 352.32 is: 485.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.04 : 742.80 = 352.32 : x
  2. Step 2: Convert to fraction form
    539.04/742.80 = 352.32/x
  3. Step 3: Cross multiply
    539.04x = 742.80 × 352.32
  4. Step 4: Simplify right side
    539.04x = 261,703.30
  5. Step 5: Solve for x
    x = 261,703.30/539.04
  6. Step 6: Final answer
    x = 485.50

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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.