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Finding the Fourth Proportional to 339.01, 508.52 and 156.28

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Solution

The fourth proportional to 339.01, 508.52 and 156.28 is: 234.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.01 : 508.52 = 156.28 : x
  2. Step 2: Convert to fraction form
    339.01/508.52 = 156.28/x
  3. Step 3: Cross multiply
    339.01x = 508.52 × 156.28
  4. Step 4: Simplify right side
    339.01x = 79,471.51
  5. Step 5: Solve for x
    x = 79,471.51/339.01
  6. Step 6: Final answer
    x = 234.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.