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Finding the Fourth Proportional to 493.11, 738.25 and 287.06

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Solution

The fourth proportional to 493.11, 738.25 and 287.06 is: 429.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.11 : 738.25 = 287.06 : x
  2. Step 2: Convert to fraction form
    493.11/738.25 = 287.06/x
  3. Step 3: Cross multiply
    493.11x = 738.25 × 287.06
  4. Step 4: Simplify right side
    493.11x = 211,917.64
  5. Step 5: Solve for x
    x = 211,917.64/493.11
  6. Step 6: Final answer
    x = 429.76

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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.