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Finding the Fourth Proportional to 385.35, 576.96 and 202.35

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Solution

The fourth proportional to 385.35, 576.96 and 202.35 is: 302.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    385.35 : 576.96 = 202.35 : x
  2. Step 2: Convert to fraction form
    385.35/576.96 = 202.35/x
  3. Step 3: Cross multiply
    385.35x = 576.96 × 202.35
  4. Step 4: Simplify right side
    385.35x = 116,747.86
  5. Step 5: Solve for x
    x = 116,747.86/385.35
  6. Step 6: Final answer
    x = 302.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.