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Finding the Fourth Proportional to 438.02, 604.60 and 272.24

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Solution

The fourth proportional to 438.02, 604.60 and 272.24 is: 375.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.02 : 604.60 = 272.24 : x
  2. Step 2: Convert to fraction form
    438.02/604.60 = 272.24/x
  3. Step 3: Cross multiply
    438.02x = 604.60 × 272.24
  4. Step 4: Simplify right side
    438.02x = 164,596.30
  5. Step 5: Solve for x
    x = 164,596.30/438.02
  6. Step 6: Final answer
    x = 375.77

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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.