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Finding the Fourth Proportional to 339.72, 509.24 and 123.16

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Solution

The fourth proportional to 339.72, 509.24 and 123.16 is: 184.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.72 : 509.24 = 123.16 : x
  2. Step 2: Convert to fraction form
    339.72/509.24 = 123.16/x
  3. Step 3: Cross multiply
    339.72x = 509.24 × 123.16
  4. Step 4: Simplify right side
    339.72x = 62,718.00
  5. Step 5: Solve for x
    x = 62,718.00/339.72
  6. Step 6: Final answer
    x = 184.62

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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.