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Finding the Fourth Proportional to 383.96, 529.49 and 301.05

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Solution

The fourth proportional to 383.96, 529.49 and 301.05 is: 415.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.96 : 529.49 = 301.05 : x
  2. Step 2: Convert to fraction form
    383.96/529.49 = 301.05/x
  3. Step 3: Cross multiply
    383.96x = 529.49 × 301.05
  4. Step 4: Simplify right side
    383.96x = 159,403.72
  5. Step 5: Solve for x
    x = 159,403.72/383.96
  6. Step 6: Final answer
    x = 415.15

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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.