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Finding the Fourth Proportional to 52.96, 72.99 and 43.72

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Solution

The fourth proportional to 52.96, 72.99 and 43.72 is: 60.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    52.96 : 72.99 = 43.72 : x
  2. Step 2: Convert to fraction form
    52.96/72.99 = 43.72/x
  3. Step 3: Cross multiply
    52.96x = 72.99 × 43.72
  4. Step 4: Simplify right side
    52.96x = 3,191.12
  5. Step 5: Solve for x
    x = 3,191.12/52.96
  6. Step 6: Final answer
    x = 60.26

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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.