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Finding the Fourth Proportional to 451.88, 623.76 and 274.84

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Solution

The fourth proportional to 451.88, 623.76 and 274.84 is: 379.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.88 : 623.76 = 274.84 : x
  2. Step 2: Convert to fraction form
    451.88/623.76 = 274.84/x
  3. Step 3: Cross multiply
    451.88x = 623.76 × 274.84
  4. Step 4: Simplify right side
    451.88x = 171,434.20
  5. Step 5: Solve for x
    x = 171,434.20/451.88
  6. Step 6: Final answer
    x = 379.38

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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.