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Finding the Fourth Proportional to 440.17, 607.74 and 274.42

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Solution

The fourth proportional to 440.17, 607.74 and 274.42 is: 378.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.17 : 607.74 = 274.42 : x
  2. Step 2: Convert to fraction form
    440.17/607.74 = 274.42/x
  3. Step 3: Cross multiply
    440.17x = 607.74 × 274.42
  4. Step 4: Simplify right side
    440.17x = 166,776.01
  5. Step 5: Solve for x
    x = 166,776.01/440.17
  6. Step 6: Final answer
    x = 378.89

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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.