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Finding the Fourth Proportional to 565.50, 847.44 and 321.70

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Solution

The fourth proportional to 565.50, 847.44 and 321.70 is: 482.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.50 : 847.44 = 321.70 : x
  2. Step 2: Convert to fraction form
    565.50/847.44 = 321.70/x
  3. Step 3: Cross multiply
    565.50x = 847.44 × 321.70
  4. Step 4: Simplify right side
    565.50x = 272,621.45
  5. Step 5: Solve for x
    x = 272,621.45/565.50
  6. Step 6: Final answer
    x = 482.09

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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.