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Finding the Fourth Proportional to 595.38, 822 and 399.06

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Solution

The fourth proportional to 595.38, 822 and 399.06 is: 550.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.38 : 822 = 399.06 : x
  2. Step 2: Convert to fraction form
    595.38/822 = 399.06/x
  3. Step 3: Cross multiply
    595.38x = 822 × 399.06
  4. Step 4: Simplify right side
    595.38x = 328,027.32
  5. Step 5: Solve for x
    x = 328,027.32/595.38
  6. Step 6: Final answer
    x = 550.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.