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Finding the Fourth Proportional to 446.30, 668.36 and 253.34

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Solution

The fourth proportional to 446.30, 668.36 and 253.34 is: 379.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.30 : 668.36 = 253.34 : x
  2. Step 2: Convert to fraction form
    446.30/668.36 = 253.34/x
  3. Step 3: Cross multiply
    446.30x = 668.36 × 253.34
  4. Step 4: Simplify right side
    446.30x = 169,322.32
  5. Step 5: Solve for x
    x = 169,322.32/446.30
  6. Step 6: Final answer
    x = 379.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.