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Finding the Fourth Proportional to 426.02, 587.93 and 239.56

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Solution

The fourth proportional to 426.02, 587.93 and 239.56 is: 330.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.02 : 587.93 = 239.56 : x
  2. Step 2: Convert to fraction form
    426.02/587.93 = 239.56/x
  3. Step 3: Cross multiply
    426.02x = 587.93 × 239.56
  4. Step 4: Simplify right side
    426.02x = 140,844.51
  5. Step 5: Solve for x
    x = 140,844.51/426.02
  6. Step 6: Final answer
    x = 330.61

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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.