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Finding the Fourth Proportional to 52.46, 79.05 and 43.64

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Solution

The fourth proportional to 52.46, 79.05 and 43.64 is: 65.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    52.46 : 79.05 = 43.64 : x
  2. Step 2: Convert to fraction form
    52.46/79.05 = 43.64/x
  3. Step 3: Cross multiply
    52.46x = 79.05 × 43.64
  4. Step 4: Simplify right side
    52.46x = 3,449.74
  5. Step 5: Solve for x
    x = 3,449.74/52.46
  6. Step 6: Final answer
    x = 65.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.