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Finding the Fourth Proportional to 596.72, 823.49 and 386.99

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Solution

The fourth proportional to 596.72, 823.49 and 386.99 is: 534.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    596.72 : 823.49 = 386.99 : x
  2. Step 2: Convert to fraction form
    596.72/823.49 = 386.99/x
  3. Step 3: Cross multiply
    596.72x = 823.49 × 386.99
  4. Step 4: Simplify right side
    596.72x = 318,679.25
  5. Step 5: Solve for x
    x = 318,679.25/596.72
  6. Step 6: Final answer
    x = 534.05

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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.