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Finding the Fourth Proportional to 705.96, 1,057.32 and 341.04

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Solution

The fourth proportional to 705.96, 1,057.32 and 341.04 is: 510.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    705.96 : 1,057.32 = 341.04 : x
  2. Step 2: Convert to fraction form
    705.96/1,057.32 = 341.04/x
  3. Step 3: Cross multiply
    705.96x = 1,057.32 × 341.04
  4. Step 4: Simplify right side
    705.96x = 360,588.41
  5. Step 5: Solve for x
    x = 360,588.41/705.96
  6. Step 6: Final answer
    x = 510.78

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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.