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Finding the Fourth Proportional to 48.64, 66.22 and 48.49

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Solution

The fourth proportional to 48.64, 66.22 and 48.49 is: 66.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.64 : 66.22 = 48.49 : x
  2. Step 2: Convert to fraction form
    48.64/66.22 = 48.49/x
  3. Step 3: Cross multiply
    48.64x = 66.22 × 48.49
  4. Step 4: Simplify right side
    48.64x = 3,210.99
  5. Step 5: Solve for x
    x = 3,210.99/48.64
  6. Step 6: Final answer
    x = 66.02

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.