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Finding the Fourth Proportional to 1,339.38, 2,009.07 and 473.67

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Solution

The fourth proportional to 1,339.38, 2,009.07 and 473.67 is: 710.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.38 : 2,009.07 = 473.67 : x
  2. Step 2: Convert to fraction form
    1,339.38/2,009.07 = 473.67/x
  3. Step 3: Cross multiply
    1,339.38x = 2,009.07 × 473.67
  4. Step 4: Simplify right side
    1,339.38x = 951,636.19
  5. Step 5: Solve for x
    x = 951,636.19/1,339.38
  6. Step 6: Final answer
    x = 710.51

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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.