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Finding the Fourth Proportional to 427.42, 589.73 and 252.77

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Solution

The fourth proportional to 427.42, 589.73 and 252.77 is: 348.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    427.42 : 589.73 = 252.77 : x
  2. Step 2: Convert to fraction form
    427.42/589.73 = 252.77/x
  3. Step 3: Cross multiply
    427.42x = 589.73 × 252.77
  4. Step 4: Simplify right side
    427.42x = 149,063.74
  5. Step 5: Solve for x
    x = 149,063.74/427.42
  6. Step 6: Final answer
    x = 348.75

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Find fourth proportional to 213.71, 294.87 and 126.38
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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.