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Finding the Fourth Proportional to 1,039.92, 1,557.03 and 795.30

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Solution

The fourth proportional to 1,039.92, 1,557.03 and 795.30 is: 1,190.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039.92 : 1,557.03 = 795.30 : x
  2. Step 2: Convert to fraction form
    1,039.92/1,557.03 = 795.30/x
  3. Step 3: Cross multiply
    1,039.92x = 1,557.03 × 795.30
  4. Step 4: Simplify right side
    1,039.92x = 1,238,305.96
  5. Step 5: Solve for x
    x = 1,238,305.96/1,039.92
  6. Step 6: Final answer
    x = 1,190.77

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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.