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Finding the Fourth Proportional to 45.71, 63.07 and 30.17

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Solution

The fourth proportional to 45.71, 63.07 and 30.17 is: 41.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.71 : 63.07 = 30.17 : x
  2. Step 2: Convert to fraction form
    45.71/63.07 = 30.17/x
  3. Step 3: Cross multiply
    45.71x = 63.07 × 30.17
  4. Step 4: Simplify right side
    45.71x = 1,902.82
  5. Step 5: Solve for x
    x = 1,902.82/45.71
  6. Step 6: Final answer
    x = 41.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.