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Finding the Fourth Proportional to 564.50, 846.86 and 218.30

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Solution

The fourth proportional to 564.50, 846.86 and 218.30 is: 327.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.50 : 846.86 = 218.30 : x
  2. Step 2: Convert to fraction form
    564.50/846.86 = 218.30/x
  3. Step 3: Cross multiply
    564.50x = 846.86 × 218.30
  4. Step 4: Simplify right side
    564.50x = 184,864.21
  5. Step 5: Solve for x
    x = 184,864.21/564.50
  6. Step 6: Final answer
    x = 327.48

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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.