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Finding the Fourth Proportional to 1,333.70, 2,000.55 and 847.10

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Solution

The fourth proportional to 1,333.70, 2,000.55 and 847.10 is: 1,270.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333.70 : 2,000.55 = 847.10 : x
  2. Step 2: Convert to fraction form
    1,333.70/2,000.55 = 847.10/x
  3. Step 3: Cross multiply
    1,333.70x = 2,000.55 × 847.10
  4. Step 4: Simplify right side
    1,333.70x = 1,694,665.91
  5. Step 5: Solve for x
    x = 1,694,665.91/1,333.70
  6. Step 6: Final answer
    x = 1,270.65

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.