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Finding the Fourth Proportional to 303.37, 455.07 and 187.74

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Solution

The fourth proportional to 303.37, 455.07 and 187.74 is: 281.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.37 : 455.07 = 187.74 : x
  2. Step 2: Convert to fraction form
    303.37/455.07 = 187.74/x
  3. Step 3: Cross multiply
    303.37x = 455.07 × 187.74
  4. Step 4: Simplify right side
    303.37x = 85,434.84
  5. Step 5: Solve for x
    x = 85,434.84/303.37
  6. Step 6: Final answer
    x = 281.62

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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.