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Finding the Fourth Proportional to 1,305.18, 1,956.42 and 483.03

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Solution

The fourth proportional to 1,305.18, 1,956.42 and 483.03 is: 724.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,305.18 : 1,956.42 = 483.03 : x
  2. Step 2: Convert to fraction form
    1,305.18/1,956.42 = 483.03/x
  3. Step 3: Cross multiply
    1,305.18x = 1,956.42 × 483.03
  4. Step 4: Simplify right side
    1,305.18x = 945,009.55
  5. Step 5: Solve for x
    x = 945,009.55/1,305.18
  6. Step 6: Final answer
    x = 724.05

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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.