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Finding the Fourth Proportional to 886.50, 1,330.26 and 475.65

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Solution

The fourth proportional to 886.50, 1,330.26 and 475.65 is: 713.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.50 : 1,330.26 = 475.65 : x
  2. Step 2: Convert to fraction form
    886.50/1,330.26 = 475.65/x
  3. Step 3: Cross multiply
    886.50x = 1,330.26 × 475.65
  4. Step 4: Simplify right side
    886.50x = 632,738.17
  5. Step 5: Solve for x
    x = 632,738.17/886.50
  6. Step 6: Final answer
    x = 713.75

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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.