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Finding the Fourth Proportional to 418.18, 626.60 and 302.46

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Solution

The fourth proportional to 418.18, 626.60 and 302.46 is: 453.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.18 : 626.60 = 302.46 : x
  2. Step 2: Convert to fraction form
    418.18/626.60 = 302.46/x
  3. Step 3: Cross multiply
    418.18x = 626.60 × 302.46
  4. Step 4: Simplify right side
    418.18x = 189,521.44
  5. Step 5: Solve for x
    x = 189,521.44/418.18
  6. Step 6: Final answer
    x = 453.21

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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.