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Finding the Fourth Proportional to 380.12, 524.40 and 232.49

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Solution

The fourth proportional to 380.12, 524.40 and 232.49 is: 320.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.12 : 524.40 = 232.49 : x
  2. Step 2: Convert to fraction form
    380.12/524.40 = 232.49/x
  3. Step 3: Cross multiply
    380.12x = 524.40 × 232.49
  4. Step 4: Simplify right side
    380.12x = 121,915.13
  5. Step 5: Solve for x
    x = 121,915.13/380.12
  6. Step 6: Final answer
    x = 320.73

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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.