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Finding the Fourth Proportional to 339.40, 467.40 and 332.20

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Solution

The fourth proportional to 339.40, 467.40 and 332.20 is: 457.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.40 : 467.40 = 332.20 : x
  2. Step 2: Convert to fraction form
    339.40/467.40 = 332.20/x
  3. Step 3: Cross multiply
    339.40x = 467.40 × 332.20
  4. Step 4: Simplify right side
    339.40x = 155,270.28
  5. Step 5: Solve for x
    x = 155,270.28/339.40
  6. Step 6: Final answer
    x = 457.48

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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.