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Finding the Fourth Proportional to 440.30, 607.62 and 274.58

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Solution

The fourth proportional to 440.30, 607.62 and 274.58 is: 378.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.30 : 607.62 = 274.58 : x
  2. Step 2: Convert to fraction form
    440.30/607.62 = 274.58/x
  3. Step 3: Cross multiply
    440.30x = 607.62 × 274.58
  4. Step 4: Simplify right side
    440.30x = 166,840.30
  5. Step 5: Solve for x
    x = 166,840.30/440.30
  6. Step 6: Final answer
    x = 378.92

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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.