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Finding the Fourth Proportional to 450.08, 621.21 and 263.66

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Solution

The fourth proportional to 450.08, 621.21 and 263.66 is: 363.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.08 : 621.21 = 263.66 : x
  2. Step 2: Convert to fraction form
    450.08/621.21 = 263.66/x
  3. Step 3: Cross multiply
    450.08x = 621.21 × 263.66
  4. Step 4: Simplify right side
    450.08x = 163,785.12
  5. Step 5: Solve for x
    x = 163,785.12/450.08
  6. Step 6: Final answer
    x = 363.91

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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.