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Finding the Fourth Proportional to 451.53, 623.19 and 276.91

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Solution

The fourth proportional to 451.53, 623.19 and 276.91 is: 382.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.53 : 623.19 = 276.91 : x
  2. Step 2: Convert to fraction form
    451.53/623.19 = 276.91/x
  3. Step 3: Cross multiply
    451.53x = 623.19 × 276.91
  4. Step 4: Simplify right side
    451.53x = 172,567.02
  5. Step 5: Solve for x
    x = 172,567.02/451.53
  6. Step 6: Final answer
    x = 382.18

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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.