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Finding the Fourth Proportional to 538.25, 807.29 and 191.55

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Solution

The fourth proportional to 538.25, 807.29 and 191.55 is: 287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.25 : 807.29 = 191.55 : x
  2. Step 2: Convert to fraction form
    538.25/807.29 = 191.55/x
  3. Step 3: Cross multiply
    538.25x = 807.29 × 191.55
  4. Step 4: Simplify right side
    538.25x = 154,639.19
  5. Step 5: Solve for x
    x = 154,639.19/538.25
  6. Step 6: Final answer
    x = 287.30

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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.