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Finding the Fourth Proportional to 847.34, 1,170.45 and 682.18

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Solution

The fourth proportional to 847.34, 1,170.45 and 682.18 is: 942.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.34 : 1,170.45 = 682.18 : x
  2. Step 2: Convert to fraction form
    847.34/1,170.45 = 682.18/x
  3. Step 3: Cross multiply
    847.34x = 1,170.45 × 682.18
  4. Step 4: Simplify right side
    847.34x = 798,451.73
  5. Step 5: Solve for x
    x = 798,451.73/847.34
  6. Step 6: Final answer
    x = 942.30

Related Problems

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Half scale
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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.