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Finding the Fourth Proportional to 52.96, 73.06 and 42.02

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Solution

The fourth proportional to 52.96, 73.06 and 42.02 is: 57.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    52.96 : 73.06 = 42.02 : x
  2. Step 2: Convert to fraction form
    52.96/73.06 = 42.02/x
  3. Step 3: Cross multiply
    52.96x = 73.06 × 42.02
  4. Step 4: Simplify right side
    52.96x = 3,069.98
  5. Step 5: Solve for x
    x = 3,069.98/52.96
  6. Step 6: Final answer
    x = 57.97

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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.