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Finding the Fourth Proportional to 474.74, 711.08 and 230.75

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Solution

The fourth proportional to 474.74, 711.08 and 230.75 is: 345.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.74 : 711.08 = 230.75 : x
  2. Step 2: Convert to fraction form
    474.74/711.08 = 230.75/x
  3. Step 3: Cross multiply
    474.74x = 711.08 × 230.75
  4. Step 4: Simplify right side
    474.74x = 164,080.56
  5. Step 5: Solve for x
    x = 164,080.56/474.74
  6. Step 6: Final answer
    x = 345.62

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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.