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Finding the Fourth Proportional to 451.54, 623.29 and 272.23

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Solution

The fourth proportional to 451.54, 623.29 and 272.23 is: 375.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.54 : 623.29 = 272.23 : x
  2. Step 2: Convert to fraction form
    451.54/623.29 = 272.23/x
  3. Step 3: Cross multiply
    451.54x = 623.29 × 272.23
  4. Step 4: Simplify right side
    451.54x = 169,678.24
  5. Step 5: Solve for x
    x = 169,678.24/451.54
  6. Step 6: Final answer
    x = 375.78

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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.