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Finding the Fourth Proportional to 565.37, 847.64 and 321.56

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Solution

The fourth proportional to 565.37, 847.64 and 321.56 is: 482.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.37 : 847.64 = 321.56 : x
  2. Step 2: Convert to fraction form
    565.37/847.64 = 321.56/x
  3. Step 3: Cross multiply
    565.37x = 847.64 × 321.56
  4. Step 4: Simplify right side
    565.37x = 272,563.68
  5. Step 5: Solve for x
    x = 272,563.68/565.37
  6. Step 6: Final answer
    x = 482.10

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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.