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Finding the Fourth Proportional to 453.96, 626.52 and 306.60

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Solution

The fourth proportional to 453.96, 626.52 and 306.60 is: 423.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.96 : 626.52 = 306.60 : x
  2. Step 2: Convert to fraction form
    453.96/626.52 = 306.60/x
  3. Step 3: Cross multiply
    453.96x = 626.52 × 306.60
  4. Step 4: Simplify right side
    453.96x = 192,091.03
  5. Step 5: Solve for x
    x = 192,091.03/453.96
  6. Step 6: Final answer
    x = 423.15

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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.