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Finding the Fourth Proportional to 996.87, 1,495.61 and 448.91

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Solution

The fourth proportional to 996.87, 1,495.61 and 448.91 is: 673.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.87 : 1,495.61 = 448.91 : x
  2. Step 2: Convert to fraction form
    996.87/1,495.61 = 448.91/x
  3. Step 3: Cross multiply
    996.87x = 1,495.61 × 448.91
  4. Step 4: Simplify right side
    996.87x = 671,384.56
  5. Step 5: Solve for x
    x = 671,384.56/996.87
  6. Step 6: Final answer
    x = 673.49

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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.