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Finding the Fourth Proportional to 1,235.92, 1,705.12 and 794.06

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Solution

The fourth proportional to 1,235.92, 1,705.12 and 794.06 is: 1,095.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235.92 : 1,705.12 = 794.06 : x
  2. Step 2: Convert to fraction form
    1,235.92/1,705.12 = 794.06/x
  3. Step 3: Cross multiply
    1,235.92x = 1,705.12 × 794.06
  4. Step 4: Simplify right side
    1,235.92x = 1,353,967.59
  5. Step 5: Solve for x
    x = 1,353,967.59/1,235.92
  6. Step 6: Final answer
    x = 1,095.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.