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Finding the Fourth Proportional to 1,614.60, 2,228.15 and 896.79

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Solution

The fourth proportional to 1,614.60, 2,228.15 and 896.79 is: 1,237.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,614.60 : 2,228.15 = 896.79 : x
  2. Step 2: Convert to fraction form
    1,614.60/2,228.15 = 896.79/x
  3. Step 3: Cross multiply
    1,614.60x = 2,228.15 × 896.79
  4. Step 4: Simplify right side
    1,614.60x = 1,998,193.24
  5. Step 5: Solve for x
    x = 1,998,193.24/1,614.60
  6. Step 6: Final answer
    x = 1,237.58

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1.5x scale

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.