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Finding the Fourth Proportional to 450.80, 621.65 and 332.57

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Solution

The fourth proportional to 450.80, 621.65 and 332.57 is: 458.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.80 : 621.65 = 332.57 : x
  2. Step 2: Convert to fraction form
    450.80/621.65 = 332.57/x
  3. Step 3: Cross multiply
    450.80x = 621.65 × 332.57
  4. Step 4: Simplify right side
    450.80x = 206,737.37
  5. Step 5: Solve for x
    x = 206,737.37/450.80
  6. Step 6: Final answer
    x = 458.61

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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.