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Finding the Fourth Proportional to 454.61, 626.82 and 380.09

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Solution

The fourth proportional to 454.61, 626.82 and 380.09 is: 524.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.61 : 626.82 = 380.09 : x
  2. Step 2: Convert to fraction form
    454.61/626.82 = 380.09/x
  3. Step 3: Cross multiply
    454.61x = 626.82 × 380.09
  4. Step 4: Simplify right side
    454.61x = 238,244.88
  5. Step 5: Solve for x
    x = 238,244.88/454.61
  6. Step 6: Final answer
    x = 524.07

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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.