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Finding the Fourth Proportional to 250.29, 375.16 and 120.21

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Solution

The fourth proportional to 250.29, 375.16 and 120.21 is: 180.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.29 : 375.16 = 120.21 : x
  2. Step 2: Convert to fraction form
    250.29/375.16 = 120.21/x
  3. Step 3: Cross multiply
    250.29x = 375.16 × 120.21
  4. Step 4: Simplify right side
    250.29x = 45,097.98
  5. Step 5: Solve for x
    x = 45,097.98/250.29
  6. Step 6: Final answer
    x = 180.18

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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.