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Finding the Fourth Proportional to 268.63, 402.53 and 181.63

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Solution

The fourth proportional to 268.63, 402.53 and 181.63 is: 272.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.63 : 402.53 = 181.63 : x
  2. Step 2: Convert to fraction form
    268.63/402.53 = 181.63/x
  3. Step 3: Cross multiply
    268.63x = 402.53 × 181.63
  4. Step 4: Simplify right side
    268.63x = 73,111.52
  5. Step 5: Solve for x
    x = 73,111.52/268.63
  6. Step 6: Final answer
    x = 272.16

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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.