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Finding the Fourth Proportional to 303.48, 454.61 and 187.75

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Solution

The fourth proportional to 303.48, 454.61 and 187.75 is: 281.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.48 : 454.61 = 187.75 : x
  2. Step 2: Convert to fraction form
    303.48/454.61 = 187.75/x
  3. Step 3: Cross multiply
    303.48x = 454.61 × 187.75
  4. Step 4: Simplify right side
    303.48x = 85,354.07
  5. Step 5: Solve for x
    x = 85,354.07/303.48
  6. Step 6: Final answer
    x = 281.25

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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.