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Finding the Fourth Proportional to 1,304.12, 1,947.02 and 994.32

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Solution

The fourth proportional to 1,304.12, 1,947.02 and 994.32 is: 1,484.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,304.12 : 1,947.02 = 994.32 : x
  2. Step 2: Convert to fraction form
    1,304.12/1,947.02 = 994.32/x
  3. Step 3: Cross multiply
    1,304.12x = 1,947.02 × 994.32
  4. Step 4: Simplify right side
    1,304.12x = 1,935,960.93
  5. Step 5: Solve for x
    x = 1,935,960.93/1,304.12
  6. Step 6: Final answer
    x = 1,484.50

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.