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Finding the Fourth Proportional to 303.46, 454.92 and 141.05

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Solution

The fourth proportional to 303.46, 454.92 and 141.05 is: 211.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.46 : 454.92 = 141.05 : x
  2. Step 2: Convert to fraction form
    303.46/454.92 = 141.05/x
  3. Step 3: Cross multiply
    303.46x = 454.92 × 141.05
  4. Step 4: Simplify right side
    303.46x = 64,167.07
  5. Step 5: Solve for x
    x = 64,167.07/303.46
  6. Step 6: Final answer
    x = 211.45

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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.