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Finding the Fourth Proportional to 262.61, 394.13 and 181.50

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Solution

The fourth proportional to 262.61, 394.13 and 181.50 is: 272.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.61 : 394.13 = 181.50 : x
  2. Step 2: Convert to fraction form
    262.61/394.13 = 181.50/x
  3. Step 3: Cross multiply
    262.61x = 394.13 × 181.50
  4. Step 4: Simplify right side
    262.61x = 71,534.60
  5. Step 5: Solve for x
    x = 71,534.60/262.61
  6. Step 6: Final answer
    x = 272.40

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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.