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Finding the Fourth Proportional to 589.78, 813.87 and 327.77

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Solution

The fourth proportional to 589.78, 813.87 and 327.77 is: 452.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.78 : 813.87 = 327.77 : x
  2. Step 2: Convert to fraction form
    589.78/813.87 = 327.77/x
  3. Step 3: Cross multiply
    589.78x = 813.87 × 327.77
  4. Step 4: Simplify right side
    589.78x = 266,762.17
  5. Step 5: Solve for x
    x = 266,762.17/589.78
  6. Step 6: Final answer
    x = 452.31

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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.