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Finding the Fourth Proportional to 1,235.46, 1,705.30 and 793.38

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Solution

The fourth proportional to 1,235.46, 1,705.30 and 793.38 is: 1,095.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235.46 : 1,705.30 = 793.38 : x
  2. Step 2: Convert to fraction form
    1,235.46/1,705.30 = 793.38/x
  3. Step 3: Cross multiply
    1,235.46x = 1,705.30 × 793.38
  4. Step 4: Simplify right side
    1,235.46x = 1,352,950.91
  5. Step 5: Solve for x
    x = 1,352,950.91/1,235.46
  6. Step 6: Final answer
    x = 1,095.10

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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.