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Finding the Fourth Proportional to 892.96, 1,339.74 and 448.54

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Solution

The fourth proportional to 892.96, 1,339.74 and 448.54 is: 672.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    892.96 : 1,339.74 = 448.54 : x
  2. Step 2: Convert to fraction form
    892.96/1,339.74 = 448.54/x
  3. Step 3: Cross multiply
    892.96x = 1,339.74 × 448.54
  4. Step 4: Simplify right side
    892.96x = 600,926.98
  5. Step 5: Solve for x
    x = 600,926.98/892.96
  6. Step 6: Final answer
    x = 672.96

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1.5x scale

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.