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Finding the Fourth Proportional to 451.65, 623.27 and 255.16

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Solution

The fourth proportional to 451.65, 623.27 and 255.16 is: 352.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.65 : 623.27 = 255.16 : x
  2. Step 2: Convert to fraction form
    451.65/623.27 = 255.16/x
  3. Step 3: Cross multiply
    451.65x = 623.27 × 255.16
  4. Step 4: Simplify right side
    451.65x = 159,029.18
  5. Step 5: Solve for x
    x = 159,029.18/451.65
  6. Step 6: Final answer
    x = 352.11

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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.