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Finding the Fourth Proportional to 705.96, 1,058.33 and 272.88

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Solution

The fourth proportional to 705.96, 1,058.33 and 272.88 is: 409.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    705.96 : 1,058.33 = 272.88 : x
  2. Step 2: Convert to fraction form
    705.96/1,058.33 = 272.88/x
  3. Step 3: Cross multiply
    705.96x = 1,058.33 × 272.88
  4. Step 4: Simplify right side
    705.96x = 288,797.77
  5. Step 5: Solve for x
    x = 288,797.77/705.96
  6. Step 6: Final answer
    x = 409.09

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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.