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Finding the Fourth Proportional to 427.49, 589.89 and 250.40

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Solution

The fourth proportional to 427.49, 589.89 and 250.40 is: 345.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    427.49 : 589.89 = 250.40 : x
  2. Step 2: Convert to fraction form
    427.49/589.89 = 250.40/x
  3. Step 3: Cross multiply
    427.49x = 589.89 × 250.40
  4. Step 4: Simplify right side
    427.49x = 147,708.46
  5. Step 5: Solve for x
    x = 147,708.46/427.49
  6. Step 6: Final answer
    x = 345.52

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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.