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Finding the Fourth Proportional to 427.90, 590.45 and 250.88

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Solution

The fourth proportional to 427.90, 590.45 and 250.88 is: 346.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    427.90 : 590.45 = 250.88 : x
  2. Step 2: Convert to fraction form
    427.90/590.45 = 250.88/x
  3. Step 3: Cross multiply
    427.90x = 590.45 × 250.88
  4. Step 4: Simplify right side
    427.90x = 148,129.14
  5. Step 5: Solve for x
    x = 148,129.14/427.90
  6. Step 6: Final answer
    x = 346.18

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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.