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Finding the Fourth Proportional to 383.16, 527.17 and 372.45

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Solution

The fourth proportional to 383.16, 527.17 and 372.45 is: 512.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.16 : 527.17 = 372.45 : x
  2. Step 2: Convert to fraction form
    383.16/527.17 = 372.45/x
  3. Step 3: Cross multiply
    383.16x = 527.17 × 372.45
  4. Step 4: Simplify right side
    383.16x = 196,344.47
  5. Step 5: Solve for x
    x = 196,344.47/383.16
  6. Step 6: Final answer
    x = 512.43

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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.