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Finding the Fourth Proportional to 357.64, 493.64 and 226.72

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Solution

The fourth proportional to 357.64, 493.64 and 226.72 is: 312.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.64 : 493.64 = 226.72 : x
  2. Step 2: Convert to fraction form
    357.64/493.64 = 226.72/x
  3. Step 3: Cross multiply
    357.64x = 493.64 × 226.72
  4. Step 4: Simplify right side
    357.64x = 111,916.93
  5. Step 5: Solve for x
    x = 111,916.93/357.64
  6. Step 6: Final answer
    x = 312.93

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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.