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Finding the Fourth Proportional to 262.24, 393.44 and 160.20

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Solution

The fourth proportional to 262.24, 393.44 and 160.20 is: 240.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.24 : 393.44 = 160.20 : x
  2. Step 2: Convert to fraction form
    262.24/393.44 = 160.20/x
  3. Step 3: Cross multiply
    262.24x = 393.44 × 160.20
  4. Step 4: Simplify right side
    262.24x = 63,029.09
  5. Step 5: Solve for x
    x = 63,029.09/262.24
  6. Step 6: Final answer
    x = 240.35

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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.