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Finding the Fourth Proportional to 383.49, 529.05 and 250.71

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Solution

The fourth proportional to 383.49, 529.05 and 250.71 is: 345.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.49 : 529.05 = 250.71 : x
  2. Step 2: Convert to fraction form
    383.49/529.05 = 250.71/x
  3. Step 3: Cross multiply
    383.49x = 529.05 × 250.71
  4. Step 4: Simplify right side
    383.49x = 132,638.13
  5. Step 5: Solve for x
    x = 132,638.13/383.49
  6. Step 6: Final answer
    x = 345.87

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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.