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Finding the Fourth Proportional to 272.03, 407.91 and 109.63

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Solution

The fourth proportional to 272.03, 407.91 and 109.63 is: 164.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.03 : 407.91 = 109.63 : x
  2. Step 2: Convert to fraction form
    272.03/407.91 = 109.63/x
  3. Step 3: Cross multiply
    272.03x = 407.91 × 109.63
  4. Step 4: Simplify right side
    272.03x = 44,717.13
  5. Step 5: Solve for x
    x = 44,717.13/272.03
  6. Step 6: Final answer
    x = 164.38

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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.