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Finding the Fourth Proportional to 202.41, 302.99 and 187.22

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Solution

The fourth proportional to 202.41, 302.99 and 187.22 is: 280.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.41 : 302.99 = 187.22 : x
  2. Step 2: Convert to fraction form
    202.41/302.99 = 187.22/x
  3. Step 3: Cross multiply
    202.41x = 302.99 × 187.22
  4. Step 4: Simplify right side
    202.41x = 56,723.34
  5. Step 5: Solve for x
    x = 56,723.34/202.41
  6. Step 6: Final answer
    x = 280.24

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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.