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Finding the Fourth Proportional to 380.26, 524.37 and 313.84

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Solution

The fourth proportional to 380.26, 524.37 and 313.84 is: 432.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.26 : 524.37 = 313.84 : x
  2. Step 2: Convert to fraction form
    380.26/524.37 = 313.84/x
  3. Step 3: Cross multiply
    380.26x = 524.37 × 313.84
  4. Step 4: Simplify right side
    380.26x = 164,568.28
  5. Step 5: Solve for x
    x = 164,568.28/380.26
  6. Step 6: Final answer
    x = 432.78

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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.