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Finding the Fourth Proportional to 886.71, 1,330.08 and 453.60

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Solution

The fourth proportional to 886.71, 1,330.08 and 453.60 is: 680.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.71 : 1,330.08 = 453.60 : x
  2. Step 2: Convert to fraction form
    886.71/1,330.08 = 453.60/x
  3. Step 3: Cross multiply
    886.71x = 1,330.08 × 453.60
  4. Step 4: Simplify right side
    886.71x = 603,324.29
  5. Step 5: Solve for x
    x = 603,324.29/886.71
  6. Step 6: Final answer
    x = 680.41

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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.