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Finding the Fourth Proportional to 383.09, 528.59 and 250.25

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Solution

The fourth proportional to 383.09, 528.59 and 250.25 is: 345.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.09 : 528.59 = 250.25 : x
  2. Step 2: Convert to fraction form
    383.09/528.59 = 250.25/x
  3. Step 3: Cross multiply
    383.09x = 528.59 × 250.25
  4. Step 4: Simplify right side
    383.09x = 132,277.63
  5. Step 5: Solve for x
    x = 132,277.63/383.09
  6. Step 6: Final answer
    x = 345.30

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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.