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Finding the Fourth Proportional to 52.44, 79 and 47.40

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Solution

The fourth proportional to 52.44, 79 and 47.40 is: 71.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    52.44 : 79 = 47.40 : x
  2. Step 2: Convert to fraction form
    52.44/79 = 47.40/x
  3. Step 3: Cross multiply
    52.44x = 79 × 47.40
  4. Step 4: Simplify right side
    52.44x = 3,744.60
  5. Step 5: Solve for x
    x = 3,744.60/52.44
  6. Step 6: Final answer
    x = 71.41

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