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Finding the Fourth Proportional to 291.06, 401.56 and 180.50

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Solution

The fourth proportional to 291.06, 401.56 and 180.50 is: 249.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.06 : 401.56 = 180.50 : x
  2. Step 2: Convert to fraction form
    291.06/401.56 = 180.50/x
  3. Step 3: Cross multiply
    291.06x = 401.56 × 180.50
  4. Step 4: Simplify right side
    291.06x = 72,479.12
  5. Step 5: Solve for x
    x = 72,479.12/291.06
  6. Step 6: Final answer
    x = 249.02

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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.