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Finding the Fourth Proportional to 333.60, 460.20 and 228.80

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Solution

The fourth proportional to 333.60, 460.20 and 228.80 is: 315.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.60 : 460.20 = 228.80 : x
  2. Step 2: Convert to fraction form
    333.60/460.20 = 228.80/x
  3. Step 3: Cross multiply
    333.60x = 460.20 × 228.80
  4. Step 4: Simplify right side
    333.60x = 105,293.76
  5. Step 5: Solve for x
    x = 105,293.76/333.60
  6. Step 6: Final answer
    x = 315.63

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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.