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Finding the Fourth Proportional to 568.18, 849.60 and 405.36

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Solution

The fourth proportional to 568.18, 849.60 and 405.36 is: 606.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.18 : 849.60 = 405.36 : x
  2. Step 2: Convert to fraction form
    568.18/849.60 = 405.36/x
  3. Step 3: Cross multiply
    568.18x = 849.60 × 405.36
  4. Step 4: Simplify right side
    568.18x = 344,393.86
  5. Step 5: Solve for x
    x = 344,393.86/568.18
  6. Step 6: Final answer
    x = 606.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.