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Finding the Fourth Proportional to 453.70, 626.34 and 306.58

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Solution

The fourth proportional to 453.70, 626.34 and 306.58 is: 423.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.70 : 626.34 = 306.58 : x
  2. Step 2: Convert to fraction form
    453.70/626.34 = 306.58/x
  3. Step 3: Cross multiply
    453.70x = 626.34 × 306.58
  4. Step 4: Simplify right side
    453.70x = 192,023.32
  5. Step 5: Solve for x
    x = 192,023.32/453.70
  6. Step 6: Final answer
    x = 423.24

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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.