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Finding the Fourth Proportional to 46.62, 63.81 and 46.40

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Solution

The fourth proportional to 46.62, 63.81 and 46.40 is: 63.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.62 : 63.81 = 46.40 : x
  2. Step 2: Convert to fraction form
    46.62/63.81 = 46.40/x
  3. Step 3: Cross multiply
    46.62x = 63.81 × 46.40
  4. Step 4: Simplify right side
    46.62x = 2,960.46
  5. Step 5: Solve for x
    x = 2,960.46/46.62
  6. Step 6: Final answer
    x = 63.50

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.