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Finding the Fourth Proportional to 262.39, 393.55 and 70.03

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Solution

The fourth proportional to 262.39, 393.55 and 70.03 is: 105.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.39 : 393.55 = 70.03 : x
  2. Step 2: Convert to fraction form
    262.39/393.55 = 70.03/x
  3. Step 3: Cross multiply
    262.39x = 393.55 × 70.03
  4. Step 4: Simplify right side
    262.39x = 27,560.31
  5. Step 5: Solve for x
    x = 27,560.31/262.39
  6. Step 6: Final answer
    x = 105.04

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.