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Finding the Fourth Proportional to 597.15, 822.99 and 513.90

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Solution

The fourth proportional to 597.15, 822.99 and 513.90 is: 708.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    597.15 : 822.99 = 513.90 : x
  2. Step 2: Convert to fraction form
    597.15/822.99 = 513.90/x
  3. Step 3: Cross multiply
    597.15x = 822.99 × 513.90
  4. Step 4: Simplify right side
    597.15x = 422,934.56
  5. Step 5: Solve for x
    x = 422,934.56/597.15
  6. Step 6: Final answer
    x = 708.26

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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.