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Finding the Fourth Proportional to 548.56, 756.84 and 352.18

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Solution

The fourth proportional to 548.56, 756.84 and 352.18 is: 485.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.56 : 756.84 = 352.18 : x
  2. Step 2: Convert to fraction form
    548.56/756.84 = 352.18/x
  3. Step 3: Cross multiply
    548.56x = 756.84 × 352.18
  4. Step 4: Simplify right side
    548.56x = 266,543.91
  5. Step 5: Solve for x
    x = 266,543.91/548.56
  6. Step 6: Final answer
    x = 485.90

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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.