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Finding the Fourth Proportional to 437.20, 603.28 and 250.72

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Solution

The fourth proportional to 437.20, 603.28 and 250.72 is: 345.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.20 : 603.28 = 250.72 : x
  2. Step 2: Convert to fraction form
    437.20/603.28 = 250.72/x
  3. Step 3: Cross multiply
    437.20x = 603.28 × 250.72
  4. Step 4: Simplify right side
    437.20x = 151,254.36
  5. Step 5: Solve for x
    x = 151,254.36/437.20
  6. Step 6: Final answer
    x = 345.96

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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.