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Finding the Fourth Proportional to 416.91, 575.31 and 230.40

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Solution

The fourth proportional to 416.91, 575.31 and 230.40 is: 317.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.91 : 575.31 = 230.40 : x
  2. Step 2: Convert to fraction form
    416.91/575.31 = 230.40/x
  3. Step 3: Cross multiply
    416.91x = 575.31 × 230.40
  4. Step 4: Simplify right side
    416.91x = 132,551.42
  5. Step 5: Solve for x
    x = 132,551.42/416.91
  6. Step 6: Final answer
    x = 317.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.