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Finding the Fourth Proportional to 595.63, 822.07 and 399.17

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Solution

The fourth proportional to 595.63, 822.07 and 399.17 is: 550.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.63 : 822.07 = 399.17 : x
  2. Step 2: Convert to fraction form
    595.63/822.07 = 399.17/x
  3. Step 3: Cross multiply
    595.63x = 822.07 × 399.17
  4. Step 4: Simplify right side
    595.63x = 328,145.68
  5. Step 5: Solve for x
    x = 328,145.68/595.63
  6. Step 6: Final answer
    x = 550.92

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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.