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Finding the Fourth Proportional to 440.30, 607.68 and 274.52

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Solution

The fourth proportional to 440.30, 607.68 and 274.52 is: 378.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.30 : 607.68 = 274.52 : x
  2. Step 2: Convert to fraction form
    440.30/607.68 = 274.52/x
  3. Step 3: Cross multiply
    440.30x = 607.68 × 274.52
  4. Step 4: Simplify right side
    440.30x = 166,817.28
  5. Step 5: Solve for x
    x = 166,817.28/440.30
  6. Step 6: Final answer
    x = 378.88

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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.