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Finding the Fourth Proportional to 455.32, 626.79 and 344.62

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Solution

The fourth proportional to 455.32, 626.79 and 344.62 is: 474.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.32 : 626.79 = 344.62 : x
  2. Step 2: Convert to fraction form
    455.32/626.79 = 344.62/x
  3. Step 3: Cross multiply
    455.32x = 626.79 × 344.62
  4. Step 4: Simplify right side
    455.32x = 216,004.37
  5. Step 5: Solve for x
    x = 216,004.37/455.32
  6. Step 6: Final answer
    x = 474.40

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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.