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Finding the Fourth Proportional to 451.85, 623.55 and 252.68

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Solution

The fourth proportional to 451.85, 623.55 and 252.68 is: 348.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.85 : 623.55 = 252.68 : x
  2. Step 2: Convert to fraction form
    451.85/623.55 = 252.68/x
  3. Step 3: Cross multiply
    451.85x = 623.55 × 252.68
  4. Step 4: Simplify right side
    451.85x = 157,560.17
  5. Step 5: Solve for x
    x = 157,560.17/451.85
  6. Step 6: Final answer
    x = 348.70

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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.