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Finding the Fourth Proportional to 380.99, 525.66 and 361.82

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Solution

The fourth proportional to 380.99, 525.66 and 361.82 is: 499.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.99 : 525.66 = 361.82 : x
  2. Step 2: Convert to fraction form
    380.99/525.66 = 361.82/x
  3. Step 3: Cross multiply
    380.99x = 525.66 × 361.82
  4. Step 4: Simplify right side
    380.99x = 190,191.67
  5. Step 5: Solve for x
    x = 190,191.67/380.99
  6. Step 6: Final answer
    x = 499.21

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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.