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Finding the Fourth Proportional to 564.20, 844.70 and 548.20

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Solution

The fourth proportional to 564.20, 844.70 and 548.20 is: 820.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.20 : 844.70 = 548.20 : x
  2. Step 2: Convert to fraction form
    564.20/844.70 = 548.20/x
  3. Step 3: Cross multiply
    564.20x = 844.70 × 548.20
  4. Step 4: Simplify right side
    564.20x = 463,064.54
  5. Step 5: Solve for x
    x = 463,064.54/564.20
  6. Step 6: Final answer
    x = 820.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.