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Finding the Fourth Proportional to 705.28, 1,062.70 and 586.21

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Solution

The fourth proportional to 705.28, 1,062.70 and 586.21 is: 883.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    705.28 : 1,062.70 = 586.21 : x
  2. Step 2: Convert to fraction form
    705.28/1,062.70 = 586.21/x
  3. Step 3: Cross multiply
    705.28x = 1,062.70 × 586.21
  4. Step 4: Simplify right side
    705.28x = 622,965.37
  5. Step 5: Solve for x
    x = 622,965.37/705.28
  6. Step 6: Final answer
    x = 883.29

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.