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Finding the Fourth Proportional to 1,804.80, 2,705.34 and 707.66

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Solution

The fourth proportional to 1,804.80, 2,705.34 and 707.66 is: 1,060.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,804.80 : 2,705.34 = 707.66 : x
  2. Step 2: Convert to fraction form
    1,804.80/2,705.34 = 707.66/x
  3. Step 3: Cross multiply
    1,804.80x = 2,705.34 × 707.66
  4. Step 4: Simplify right side
    1,804.80x = 1,914,460.90
  5. Step 5: Solve for x
    x = 1,914,460.90/1,804.80
  6. Step 6: Final answer
    x = 1,060.76

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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.