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Finding the Fourth Proportional to 402.37, 602.34 and 228.72

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Solution

The fourth proportional to 402.37, 602.34 and 228.72 is: 342.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.37 : 602.34 = 228.72 : x
  2. Step 2: Convert to fraction form
    402.37/602.34 = 228.72/x
  3. Step 3: Cross multiply
    402.37x = 602.34 × 228.72
  4. Step 4: Simplify right side
    402.37x = 137,768.61
  5. Step 5: Solve for x
    x = 137,768.61/402.37
  6. Step 6: Final answer
    x = 342.39

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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.