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Finding the Fourth Proportional to 450.81, 621.90 and 264.31

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Solution

The fourth proportional to 450.81, 621.90 and 264.31 is: 364.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.81 : 621.90 = 264.31 : x
  2. Step 2: Convert to fraction form
    450.81/621.90 = 264.31/x
  3. Step 3: Cross multiply
    450.81x = 621.90 × 264.31
  4. Step 4: Simplify right side
    450.81x = 164,372.83
  5. Step 5: Solve for x
    x = 164,372.83/450.81
  6. Step 6: Final answer
    x = 364.62

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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.