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Finding the Fourth Proportional to 1,202.76, 1,800.81 and 942.12

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Solution

The fourth proportional to 1,202.76, 1,800.81 and 942.12 is: 1,410.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,202.76 : 1,800.81 = 942.12 : x
  2. Step 2: Convert to fraction form
    1,202.76/1,800.81 = 942.12/x
  3. Step 3: Cross multiply
    1,202.76x = 1,800.81 × 942.12
  4. Step 4: Simplify right side
    1,202.76x = 1,696,579.12
  5. Step 5: Solve for x
    x = 1,696,579.12/1,202.76
  6. Step 6: Final answer
    x = 1,410.57

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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.