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Finding the Fourth Proportional to 263.28, 393.98 and 160.59

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Solution

The fourth proportional to 263.28, 393.98 and 160.59 is: 240.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.28 : 393.98 = 160.59 : x
  2. Step 2: Convert to fraction form
    263.28/393.98 = 160.59/x
  3. Step 3: Cross multiply
    263.28x = 393.98 × 160.59
  4. Step 4: Simplify right side
    263.28x = 63,268.45
  5. Step 5: Solve for x
    x = 63,268.45/263.28
  6. Step 6: Final answer
    x = 240.31

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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.