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Finding the Fourth Proportional to 564.68, 847.11 and 256.67

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Solution

The fourth proportional to 564.68, 847.11 and 256.67 is: 385.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.68 : 847.11 = 256.67 : x
  2. Step 2: Convert to fraction form
    564.68/847.11 = 256.67/x
  3. Step 3: Cross multiply
    564.68x = 847.11 × 256.67
  4. Step 4: Simplify right side
    564.68x = 217,423.49
  5. Step 5: Solve for x
    x = 217,423.49/564.68
  6. Step 6: Final answer
    x = 385.04

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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.