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Finding the Fourth Proportional to 417.87, 625.86 and 234.90

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Solution

The fourth proportional to 417.87, 625.86 and 234.90 is: 351.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.87 : 625.86 = 234.90 : x
  2. Step 2: Convert to fraction form
    417.87/625.86 = 234.90/x
  3. Step 3: Cross multiply
    417.87x = 625.86 × 234.90
  4. Step 4: Simplify right side
    417.87x = 147,014.51
  5. Step 5: Solve for x
    x = 147,014.51/417.87
  6. Step 6: Final answer
    x = 351.82

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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.