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Finding the Fourth Proportional to 564.18, 846.40 and 239.56

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Solution

The fourth proportional to 564.18, 846.40 and 239.56 is: 359.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.18 : 846.40 = 239.56 : x
  2. Step 2: Convert to fraction form
    564.18/846.40 = 239.56/x
  3. Step 3: Cross multiply
    564.18x = 846.40 × 239.56
  4. Step 4: Simplify right side
    564.18x = 202,763.58
  5. Step 5: Solve for x
    x = 202,763.58/564.18
  6. Step 6: Final answer
    x = 359.40

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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.