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Finding the Fourth Proportional to 380.27, 524.27 and 291.49

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Solution

The fourth proportional to 380.27, 524.27 and 291.49 is: 401.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.27 : 524.27 = 291.49 : x
  2. Step 2: Convert to fraction form
    380.27/524.27 = 291.49/x
  3. Step 3: Cross multiply
    380.27x = 524.27 × 291.49
  4. Step 4: Simplify right side
    380.27x = 152,818.88
  5. Step 5: Solve for x
    x = 152,818.88/380.27
  6. Step 6: Final answer
    x = 401.87

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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.