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Finding the Fourth Proportional to 564.40, 846.96 and 239.80

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Solution

The fourth proportional to 564.40, 846.96 and 239.80 is: 359.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.40 : 846.96 = 239.80 : x
  2. Step 2: Convert to fraction form
    564.40/846.96 = 239.80/x
  3. Step 3: Cross multiply
    564.40x = 846.96 × 239.80
  4. Step 4: Simplify right side
    564.40x = 203,101.01
  5. Step 5: Solve for x
    x = 203,101.01/564.40
  6. Step 6: Final answer
    x = 359.85

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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.