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Finding the Fourth Proportional to 303.64, 455.14 and 149.58

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Solution

The fourth proportional to 303.64, 455.14 and 149.58 is: 224.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.64 : 455.14 = 149.58 : x
  2. Step 2: Convert to fraction form
    303.64/455.14 = 149.58/x
  3. Step 3: Cross multiply
    303.64x = 455.14 × 149.58
  4. Step 4: Simplify right side
    303.64x = 68,079.84
  5. Step 5: Solve for x
    x = 68,079.84/303.64
  6. Step 6: Final answer
    x = 224.21

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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.