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Finding the Fourth Proportional to 416.90, 575.32 and 230.39

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Solution

The fourth proportional to 416.90, 575.32 and 230.39 is: 317.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.90 : 575.32 = 230.39 : x
  2. Step 2: Convert to fraction form
    416.90/575.32 = 230.39/x
  3. Step 3: Cross multiply
    416.90x = 575.32 × 230.39
  4. Step 4: Simplify right side
    416.90x = 132,545.53
  5. Step 5: Solve for x
    x = 132,545.53/416.90
  6. Step 6: Final answer
    x = 317.93

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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.