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Finding the Fourth Proportional to 697.49, 961.60 and 539.84

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Solution

The fourth proportional to 697.49, 961.60 and 539.84 is: 744.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.49 : 961.60 = 539.84 : x
  2. Step 2: Convert to fraction form
    697.49/961.60 = 539.84/x
  3. Step 3: Cross multiply
    697.49x = 961.60 × 539.84
  4. Step 4: Simplify right side
    697.49x = 519,110.14
  5. Step 5: Solve for x
    x = 519,110.14/697.49
  6. Step 6: Final answer
    x = 744.25

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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.