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Finding the Fourth Proportional to 304.14, 455.68 and 141.49

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Solution

The fourth proportional to 304.14, 455.68 and 141.49 is: 211.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.14 : 455.68 = 141.49 : x
  2. Step 2: Convert to fraction form
    304.14/455.68 = 141.49/x
  3. Step 3: Cross multiply
    304.14x = 455.68 × 141.49
  4. Step 4: Simplify right side
    304.14x = 64,474.16
  5. Step 5: Solve for x
    x = 64,474.16/304.14
  6. Step 6: Final answer
    x = 211.99

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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.