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Finding the Fourth Proportional to 538.11, 806.48 and 291.30

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Solution

The fourth proportional to 538.11, 806.48 and 291.30 is: 436.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.11 : 806.48 = 291.30 : x
  2. Step 2: Convert to fraction form
    538.11/806.48 = 291.30/x
  3. Step 3: Cross multiply
    538.11x = 806.48 × 291.30
  4. Step 4: Simplify right side
    538.11x = 234,926.80
  5. Step 5: Solve for x
    x = 234,926.80/538.11
  6. Step 6: Final answer
    x = 436.58

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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.