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Finding the Fourth Proportional to 538.88, 808.31 and 154.13

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Solution

The fourth proportional to 538.88, 808.31 and 154.13 is: 231.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.88 : 808.31 = 154.13 : x
  2. Step 2: Convert to fraction form
    538.88/808.31 = 154.13/x
  3. Step 3: Cross multiply
    538.88x = 808.31 × 154.13
  4. Step 4: Simplify right side
    538.88x = 124,581.16
  5. Step 5: Solve for x
    x = 124,581.16/538.88
  6. Step 6: Final answer
    x = 231.19

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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.