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Finding the Fourth Proportional to 380.75, 525.48 and 250.05

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Solution

The fourth proportional to 380.75, 525.48 and 250.05 is: 345.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.75 : 525.48 = 250.05 : x
  2. Step 2: Convert to fraction form
    380.75/525.48 = 250.05/x
  3. Step 3: Cross multiply
    380.75x = 525.48 × 250.05
  4. Step 4: Simplify right side
    380.75x = 131,396.27
  5. Step 5: Solve for x
    x = 131,396.27/380.75
  6. Step 6: Final answer
    x = 345.10

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Find fourth proportional to 190.38, 262.74 and 125.03
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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.