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Finding the Fourth Proportional to 887.28, 1,330.08 and 453.48

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Solution

The fourth proportional to 887.28, 1,330.08 and 453.48 is: 679.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.28 : 1,330.08 = 453.48 : x
  2. Step 2: Convert to fraction form
    887.28/1,330.08 = 453.48/x
  3. Step 3: Cross multiply
    887.28x = 1,330.08 × 453.48
  4. Step 4: Simplify right side
    887.28x = 603,164.68
  5. Step 5: Solve for x
    x = 603,164.68/887.28
  6. Step 6: Final answer
    x = 679.79

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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.