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Finding the Fourth Proportional to 46.40, 63.60 and 45.71

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Solution

The fourth proportional to 46.40, 63.60 and 45.71 is: 62.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.40 : 63.60 = 45.71 : x
  2. Step 2: Convert to fraction form
    46.40/63.60 = 45.71/x
  3. Step 3: Cross multiply
    46.40x = 63.60 × 45.71
  4. Step 4: Simplify right side
    46.40x = 2,907.33
  5. Step 5: Solve for x
    x = 2,907.33/46.40
  6. Step 6: Final answer
    x = 62.66

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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.