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Finding the Fourth Proportional to 565.54, 847.61 and 322.21

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Solution

The fourth proportional to 565.54, 847.61 and 322.21 is: 482.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.54 : 847.61 = 322.21 : x
  2. Step 2: Convert to fraction form
    565.54/847.61 = 322.21/x
  3. Step 3: Cross multiply
    565.54x = 847.61 × 322.21
  4. Step 4: Simplify right side
    565.54x = 273,102.57
  5. Step 5: Solve for x
    x = 273,102.57/565.54
  6. Step 6: Final answer
    x = 482.90

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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.