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Finding the Fourth Proportional to 539.80, 749.94 and 533.32

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Solution

The fourth proportional to 539.80, 749.94 and 533.32 is: 740.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.80 : 749.94 = 533.32 : x
  2. Step 2: Convert to fraction form
    539.80/749.94 = 533.32/x
  3. Step 3: Cross multiply
    539.80x = 749.94 × 533.32
  4. Step 4: Simplify right side
    539.80x = 399,958.00
  5. Step 5: Solve for x
    x = 399,958.00/539.80
  6. Step 6: Final answer
    x = 740.94

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.