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Finding the Fourth Proportional to 440.29, 607.80 and 274.74

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Solution

The fourth proportional to 440.29, 607.80 and 274.74 is: 379.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.29 : 607.80 = 274.74 : x
  2. Step 2: Convert to fraction form
    440.29/607.80 = 274.74/x
  3. Step 3: Cross multiply
    440.29x = 607.80 × 274.74
  4. Step 4: Simplify right side
    440.29x = 166,989.14
  5. Step 5: Solve for x
    x = 166,989.14/440.29
  6. Step 6: Final answer
    x = 379.27

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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.