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Finding the Fourth Proportional to 304, 455.74 and 130.66

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Solution

The fourth proportional to 304, 455.74 and 130.66 is: 195.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    304 : 455.74 = 130.66 : x
  2. Step 2: Convert to fraction form
    304/455.74 = 130.66/x
  3. Step 3: Cross multiply
    304x = 455.74 × 130.66
  4. Step 4: Simplify right side
    304x = 59,546.99
  5. Step 5: Solve for x
    x = 59,546.99/304
  6. Step 6: Final answer
    x = 195.88

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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.