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Finding the Fourth Proportional to 372.42, 558.54 and 228.06

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Solution

The fourth proportional to 372.42, 558.54 and 228.06 is: 342.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.42 : 558.54 = 228.06 : x
  2. Step 2: Convert to fraction form
    372.42/558.54 = 228.06/x
  3. Step 3: Cross multiply
    372.42x = 558.54 × 228.06
  4. Step 4: Simplify right side
    372.42x = 127,380.63
  5. Step 5: Solve for x
    x = 127,380.63/372.42
  6. Step 6: Final answer
    x = 342.03

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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.