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Finding the Fourth Proportional to 46.17, 63.76 and 30.64

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Solution

The fourth proportional to 46.17, 63.76 and 30.64 is: 42.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.17 : 63.76 = 30.64 : x
  2. Step 2: Convert to fraction form
    46.17/63.76 = 30.64/x
  3. Step 3: Cross multiply
    46.17x = 63.76 × 30.64
  4. Step 4: Simplify right side
    46.17x = 1,953.61
  5. Step 5: Solve for x
    x = 1,953.61/46.17
  6. Step 6: Final answer
    x = 42.31

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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.