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Finding the Fourth Proportional to 705.40, 1,060.20 and 584.44

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Solution

The fourth proportional to 705.40, 1,060.20 and 584.44 is: 878.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    705.40 : 1,060.20 = 584.44 : x
  2. Step 2: Convert to fraction form
    705.40/1,060.20 = 584.44/x
  3. Step 3: Cross multiply
    705.40x = 1,060.20 × 584.44
  4. Step 4: Simplify right side
    705.40x = 619,623.29
  5. Step 5: Solve for x
    x = 619,623.29/705.40
  6. Step 6: Final answer
    x = 878.40

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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.