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Finding the Fourth Proportional to 79.66, 109.93 and 46.93

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Solution

The fourth proportional to 79.66, 109.93 and 46.93 is: 64.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.66 : 109.93 = 46.93 : x
  2. Step 2: Convert to fraction form
    79.66/109.93 = 46.93/x
  3. Step 3: Cross multiply
    79.66x = 109.93 × 46.93
  4. Step 4: Simplify right side
    79.66x = 5,158.90
  5. Step 5: Solve for x
    x = 5,158.90/79.66
  6. Step 6: Final answer
    x = 64.76

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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.