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Finding the Fourth Proportional to 318.79, 477.75 and 241.51

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Solution

The fourth proportional to 318.79, 477.75 and 241.51 is: 361.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    318.79 : 477.75 = 241.51 : x
  2. Step 2: Convert to fraction form
    318.79/477.75 = 241.51/x
  3. Step 3: Cross multiply
    318.79x = 477.75 × 241.51
  4. Step 4: Simplify right side
    318.79x = 115,379.31
  5. Step 5: Solve for x
    x = 115,379.31/318.79
  6. Step 6: Final answer
    x = 361.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.