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Finding the Fourth Proportional to 453.32, 675.52 and 438.62

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Solution

The fourth proportional to 453.32, 675.52 and 438.62 is: 653.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.32 : 675.52 = 438.62 : x
  2. Step 2: Convert to fraction form
    453.32/675.52 = 438.62/x
  3. Step 3: Cross multiply
    453.32x = 675.52 × 438.62
  4. Step 4: Simplify right side
    453.32x = 296,296.58
  5. Step 5: Solve for x
    x = 296,296.58/453.32
  6. Step 6: Final answer
    x = 653.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.