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Finding the Fourth Proportional to 538.75, 808.26 and 230.45

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Solution

The fourth proportional to 538.75, 808.26 and 230.45 is: 345.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.75 : 808.26 = 230.45 : x
  2. Step 2: Convert to fraction form
    538.75/808.26 = 230.45/x
  3. Step 3: Cross multiply
    538.75x = 808.26 × 230.45
  4. Step 4: Simplify right side
    538.75x = 186,263.52
  5. Step 5: Solve for x
    x = 186,263.52/538.75
  6. Step 6: Final answer
    x = 345.73

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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.