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Finding the Fourth Proportional to 45.66, 63.03 and 30.98

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Solution

The fourth proportional to 45.66, 63.03 and 30.98 is: 42.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.66 : 63.03 = 30.98 : x
  2. Step 2: Convert to fraction form
    45.66/63.03 = 30.98/x
  3. Step 3: Cross multiply
    45.66x = 63.03 × 30.98
  4. Step 4: Simplify right side
    45.66x = 1,952.72
  5. Step 5: Solve for x
    x = 1,952.72/45.66
  6. Step 6: Final answer
    x = 42.77

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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.