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Finding the Fourth Proportional to 228.07, 342.03 and 74.03

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Solution

The fourth proportional to 228.07, 342.03 and 74.03 is: 111.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.07 : 342.03 = 74.03 : x
  2. Step 2: Convert to fraction form
    228.07/342.03 = 74.03/x
  3. Step 3: Cross multiply
    228.07x = 342.03 × 74.03
  4. Step 4: Simplify right side
    228.07x = 25,321.61
  5. Step 5: Solve for x
    x = 25,321.61/228.07
  6. Step 6: Final answer
    x = 111.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.