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Finding the Fourth Proportional to 418.18, 626.86 and 235.18

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Solution

The fourth proportional to 418.18, 626.86 and 235.18 is: 352.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.18 : 626.86 = 235.18 : x
  2. Step 2: Convert to fraction form
    418.18/626.86 = 235.18/x
  3. Step 3: Cross multiply
    418.18x = 626.86 × 235.18
  4. Step 4: Simplify right side
    418.18x = 147,424.93
  5. Step 5: Solve for x
    x = 147,424.93/418.18
  6. Step 6: Final answer
    x = 352.54

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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.