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Finding the Fourth Proportional to 886.75, 1,335.27 and 657.27

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Solution

The fourth proportional to 886.75, 1,335.27 and 657.27 is: 989.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.75 : 1,335.27 = 657.27 : x
  2. Step 2: Convert to fraction form
    886.75/1,335.27 = 657.27/x
  3. Step 3: Cross multiply
    886.75x = 1,335.27 × 657.27
  4. Step 4: Simplify right side
    886.75x = 877,632.91
  5. Step 5: Solve for x
    x = 877,632.91/886.75
  6. Step 6: Final answer
    x = 989.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.