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Finding the Fourth Proportional to 272.95, 376.83 and 261.34

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Solution

The fourth proportional to 272.95, 376.83 and 261.34 is: 360.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.95 : 376.83 = 261.34 : x
  2. Step 2: Convert to fraction form
    272.95/376.83 = 261.34/x
  3. Step 3: Cross multiply
    272.95x = 376.83 × 261.34
  4. Step 4: Simplify right side
    272.95x = 98,479.81
  5. Step 5: Solve for x
    x = 98,479.81/272.95
  6. Step 6: Final answer
    x = 360.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.