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Finding the Fourth Proportional to 595.92, 822.65 and 399.56

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Solution

The fourth proportional to 595.92, 822.65 and 399.56 is: 551.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.92 : 822.65 = 399.56 : x
  2. Step 2: Convert to fraction form
    595.92/822.65 = 399.56/x
  3. Step 3: Cross multiply
    595.92x = 822.65 × 399.56
  4. Step 4: Simplify right side
    595.92x = 328,698.03
  5. Step 5: Solve for x
    x = 328,698.03/595.92
  6. Step 6: Final answer
    x = 551.58

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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.