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Finding the Fourth Proportional to 450.54, 621.91 and 271.23

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Solution

The fourth proportional to 450.54, 621.91 and 271.23 is: 374.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.54 : 621.91 = 271.23 : x
  2. Step 2: Convert to fraction form
    450.54/621.91 = 271.23/x
  3. Step 3: Cross multiply
    450.54x = 621.91 × 271.23
  4. Step 4: Simplify right side
    450.54x = 168,676.18
  5. Step 5: Solve for x
    x = 168,676.18/450.54
  6. Step 6: Final answer
    x = 374.39

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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.