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Finding the Fourth Proportional to 899.34, 1,346.22 and 487.46

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Solution

The fourth proportional to 899.34, 1,346.22 and 487.46 is: 729.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.34 : 1,346.22 = 487.46 : x
  2. Step 2: Convert to fraction form
    899.34/1,346.22 = 487.46/x
  3. Step 3: Cross multiply
    899.34x = 1,346.22 × 487.46
  4. Step 4: Simplify right side
    899.34x = 656,221.67
  5. Step 5: Solve for x
    x = 656,221.67/899.34
  6. Step 6: Final answer
    x = 729.67

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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.