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Finding the Fourth Proportional to 314.54, 433.81 and 190.07

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Solution

The fourth proportional to 314.54, 433.81 and 190.07 is: 262.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.54 : 433.81 = 190.07 : x
  2. Step 2: Convert to fraction form
    314.54/433.81 = 190.07/x
  3. Step 3: Cross multiply
    314.54x = 433.81 × 190.07
  4. Step 4: Simplify right side
    314.54x = 82,454.27
  5. Step 5: Solve for x
    x = 82,454.27/314.54
  6. Step 6: Final answer
    x = 262.14

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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.