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Finding the Fourth Proportional to 1,455.96, 2,008.80 and 896.16

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Solution

The fourth proportional to 1,455.96, 2,008.80 and 896.16 is: 1,236.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.96 : 2,008.80 = 896.16 : x
  2. Step 2: Convert to fraction form
    1,455.96/2,008.80 = 896.16/x
  3. Step 3: Cross multiply
    1,455.96x = 2,008.80 × 896.16
  4. Step 4: Simplify right side
    1,455.96x = 1,800,206.21
  5. Step 5: Solve for x
    x = 1,800,206.21/1,455.96
  6. Step 6: Final answer
    x = 1,236.44

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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.