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Finding the Fourth Proportional to 538.91, 808.70 and 230.76

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Solution

The fourth proportional to 538.91, 808.70 and 230.76 is: 346.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.91 : 808.70 = 230.76 : x
  2. Step 2: Convert to fraction form
    538.91/808.70 = 230.76/x
  3. Step 3: Cross multiply
    538.91x = 808.70 × 230.76
  4. Step 4: Simplify right side
    538.91x = 186,614.46
  5. Step 5: Solve for x
    x = 186,614.46/538.91
  6. Step 6: Final answer
    x = 346.28

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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.