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Finding the Fourth Proportional to 564.18, 847.69 and 358.85

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Solution

The fourth proportional to 564.18, 847.69 and 358.85 is: 539.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.18 : 847.69 = 358.85 : x
  2. Step 2: Convert to fraction form
    564.18/847.69 = 358.85/x
  3. Step 3: Cross multiply
    564.18x = 847.69 × 358.85
  4. Step 4: Simplify right side
    564.18x = 304,193.56
  5. Step 5: Solve for x
    x = 304,193.56/564.18
  6. Step 6: Final answer
    x = 539.18

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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.