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Finding the Fourth Proportional to 313.08, 432.59 and 248.09

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Solution

The fourth proportional to 313.08, 432.59 and 248.09 is: 342.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.08 : 432.59 = 248.09 : x
  2. Step 2: Convert to fraction form
    313.08/432.59 = 248.09/x
  3. Step 3: Cross multiply
    313.08x = 432.59 × 248.09
  4. Step 4: Simplify right side
    313.08x = 107,317.85
  5. Step 5: Solve for x
    x = 107,317.85/313.08
  6. Step 6: Final answer
    x = 342.78

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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.