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Finding the Fourth Proportional to 597.30, 821.79 and 581.10

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Solution

The fourth proportional to 597.30, 821.79 and 581.10 is: 799.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    597.30 : 821.79 = 581.10 : x
  2. Step 2: Convert to fraction form
    597.30/821.79 = 581.10/x
  3. Step 3: Cross multiply
    597.30x = 821.79 × 581.10
  4. Step 4: Simplify right side
    597.30x = 477,542.17
  5. Step 5: Solve for x
    x = 477,542.17/597.30
  6. Step 6: Final answer
    x = 799.50

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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.