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Finding the Fourth Proportional to 455.24, 626.82 and 377.48

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Solution

The fourth proportional to 455.24, 626.82 and 377.48 is: 519.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.24 : 626.82 = 377.48 : x
  2. Step 2: Convert to fraction form
    455.24/626.82 = 377.48/x
  3. Step 3: Cross multiply
    455.24x = 626.82 × 377.48
  4. Step 4: Simplify right side
    455.24x = 236,612.01
  5. Step 5: Solve for x
    x = 236,612.01/455.24
  6. Step 6: Final answer
    x = 519.75

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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.