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Finding the Fourth Proportional to 340.02, 471.37 and 321.54

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Solution

The fourth proportional to 340.02, 471.37 and 321.54 is: 445.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.02 : 471.37 = 321.54 : x
  2. Step 2: Convert to fraction form
    340.02/471.37 = 321.54/x
  3. Step 3: Cross multiply
    340.02x = 471.37 × 321.54
  4. Step 4: Simplify right side
    340.02x = 151,564.31
  5. Step 5: Solve for x
    x = 151,564.31/340.02
  6. Step 6: Final answer
    x = 445.75

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.