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Finding the Fourth Proportional to 305.33, 457.11 and 228.65

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Solution

The fourth proportional to 305.33, 457.11 and 228.65 is: 342.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.33 : 457.11 = 228.65 : x
  2. Step 2: Convert to fraction form
    305.33/457.11 = 228.65/x
  3. Step 3: Cross multiply
    305.33x = 457.11 × 228.65
  4. Step 4: Simplify right side
    305.33x = 104,515.92
  5. Step 5: Solve for x
    x = 104,515.92/305.33
  6. Step 6: Final answer
    x = 342.31

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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.