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Finding the Fourth Proportional to 564.13, 845.28 and 289.84

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Solution

The fourth proportional to 564.13, 845.28 and 289.84 is: 434.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.13 : 845.28 = 289.84 : x
  2. Step 2: Convert to fraction form
    564.13/845.28 = 289.84/x
  3. Step 3: Cross multiply
    564.13x = 845.28 × 289.84
  4. Step 4: Simplify right side
    564.13x = 244,995.96
  5. Step 5: Solve for x
    x = 244,995.96/564.13
  6. Step 6: Final answer
    x = 434.29

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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.