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Finding the Fourth Proportional to 314.51, 433.46 and 240.68

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Solution

The fourth proportional to 314.51, 433.46 and 240.68 is: 331.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.51 : 433.46 = 240.68 : x
  2. Step 2: Convert to fraction form
    314.51/433.46 = 240.68/x
  3. Step 3: Cross multiply
    314.51x = 433.46 × 240.68
  4. Step 4: Simplify right side
    314.51x = 104,321.78
  5. Step 5: Solve for x
    x = 104,321.78/314.51
  6. Step 6: Final answer
    x = 331.70

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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.