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Finding the Fourth Proportional to 385.73, 577.85 and 299.01

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Solution

The fourth proportional to 385.73, 577.85 and 299.01 is: 447.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    385.73 : 577.85 = 299.01 : x
  2. Step 2: Convert to fraction form
    385.73/577.85 = 299.01/x
  3. Step 3: Cross multiply
    385.73x = 577.85 × 299.01
  4. Step 4: Simplify right side
    385.73x = 172,781.43
  5. Step 5: Solve for x
    x = 172,781.43/385.73
  6. Step 6: Final answer
    x = 447.94

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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.