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Finding the Fourth Proportional to 450.19, 675.71 and 319.82

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Solution

The fourth proportional to 450.19, 675.71 and 319.82 is: 480.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.19 : 675.71 = 319.82 : x
  2. Step 2: Convert to fraction form
    450.19/675.71 = 319.82/x
  3. Step 3: Cross multiply
    450.19x = 675.71 × 319.82
  4. Step 4: Simplify right side
    450.19x = 216,105.57
  5. Step 5: Solve for x
    x = 216,105.57/450.19
  6. Step 6: Final answer
    x = 480.03

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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.