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Finding the Fourth Proportional to 899.66, 1,234.06 and 891.86

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Solution

The fourth proportional to 899.66, 1,234.06 and 891.86 is: 1,223.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.66 : 1,234.06 = 891.86 : x
  2. Step 2: Convert to fraction form
    899.66/1,234.06 = 891.86/x
  3. Step 3: Cross multiply
    899.66x = 1,234.06 × 891.86
  4. Step 4: Simplify right side
    899.66x = 1,100,608.75
  5. Step 5: Solve for x
    x = 1,100,608.75/899.66
  6. Step 6: Final answer
    x = 1,223.37

Related Problems

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.