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Finding the Fourth Proportional to 548, 756.88 and 363.68

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Solution

The fourth proportional to 548, 756.88 and 363.68 is: 502.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    548 : 756.88 = 363.68 : x
  2. Step 2: Convert to fraction form
    548/756.88 = 363.68/x
  3. Step 3: Cross multiply
    548x = 756.88 × 363.68
  4. Step 4: Simplify right side
    548x = 275,262.12
  5. Step 5: Solve for x
    x = 275,262.12/548
  6. Step 6: Final answer
    x = 502.30

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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.