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Finding the Fourth Proportional to 309.06, 425.70 and 250.02

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Solution

The fourth proportional to 309.06, 425.70 and 250.02 is: 344.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    309.06 : 425.70 = 250.02 : x
  2. Step 2: Convert to fraction form
    309.06/425.70 = 250.02/x
  3. Step 3: Cross multiply
    309.06x = 425.70 × 250.02
  4. Step 4: Simplify right side
    309.06x = 106,433.51
  5. Step 5: Solve for x
    x = 106,433.51/309.06
  6. Step 6: Final answer
    x = 344.38

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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.