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Finding the Fourth Proportional to 47.77, 65.81 and 46.49

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Solution

The fourth proportional to 47.77, 65.81 and 46.49 is: 64.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.77 : 65.81 = 46.49 : x
  2. Step 2: Convert to fraction form
    47.77/65.81 = 46.49/x
  3. Step 3: Cross multiply
    47.77x = 65.81 × 46.49
  4. Step 4: Simplify right side
    47.77x = 3,059.18
  5. Step 5: Solve for x
    x = 3,059.18/47.77
  6. Step 6: Final answer
    x = 64.05

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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.