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Finding the Fourth Proportional to 567.74, 850.12 and 393.88

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Solution

The fourth proportional to 567.74, 850.12 and 393.88 is: 589.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.74 : 850.12 = 393.88 : x
  2. Step 2: Convert to fraction form
    567.74/850.12 = 393.88/x
  3. Step 3: Cross multiply
    567.74x = 850.12 × 393.88
  4. Step 4: Simplify right side
    567.74x = 334,845.27
  5. Step 5: Solve for x
    x = 334,845.27/567.74
  6. Step 6: Final answer
    x = 589.79

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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.