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Finding the Fourth Proportional to 383.26, 574.57 and 318.08

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Solution

The fourth proportional to 383.26, 574.57 and 318.08 is: 476.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.26 : 574.57 = 318.08 : x
  2. Step 2: Convert to fraction form
    383.26/574.57 = 318.08/x
  3. Step 3: Cross multiply
    383.26x = 574.57 × 318.08
  4. Step 4: Simplify right side
    383.26x = 182,754.76
  5. Step 5: Solve for x
    x = 182,754.76/383.26
  6. Step 6: Final answer
    x = 476.84

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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.