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Finding the Fourth Proportional to 610.92, 842.22 and 445.14

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Solution

The fourth proportional to 610.92, 842.22 and 445.14 is: 613.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.92 : 842.22 = 445.14 : x
  2. Step 2: Convert to fraction form
    610.92/842.22 = 445.14/x
  3. Step 3: Cross multiply
    610.92x = 842.22 × 445.14
  4. Step 4: Simplify right side
    610.92x = 374,905.81
  5. Step 5: Solve for x
    x = 374,905.81/610.92
  6. Step 6: Final answer
    x = 613.67

Related Problems

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.