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Finding the Fourth Proportional to 383.24, 528.58 and 248.68

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Solution

The fourth proportional to 383.24, 528.58 and 248.68 is: 342.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.24 : 528.58 = 248.68 : x
  2. Step 2: Convert to fraction form
    383.24/528.58 = 248.68/x
  3. Step 3: Cross multiply
    383.24x = 528.58 × 248.68
  4. Step 4: Simplify right side
    383.24x = 131,443.39
  5. Step 5: Solve for x
    x = 131,443.39/383.24
  6. Step 6: Final answer
    x = 342.98

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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.