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Finding the Fourth Proportional to 305.49, 458.28 and 151.50

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Solution

The fourth proportional to 305.49, 458.28 and 151.50 is: 227.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.49 : 458.28 = 151.50 : x
  2. Step 2: Convert to fraction form
    305.49/458.28 = 151.50/x
  3. Step 3: Cross multiply
    305.49x = 458.28 × 151.50
  4. Step 4: Simplify right side
    305.49x = 69,429.42
  5. Step 5: Solve for x
    x = 69,429.42/305.49
  6. Step 6: Final answer
    x = 227.27

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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.