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Finding the Fourth Proportional to 433.96, 649.76 and 228.08

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Solution

The fourth proportional to 433.96, 649.76 and 228.08 is: 341.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.96 : 649.76 = 228.08 : x
  2. Step 2: Convert to fraction form
    433.96/649.76 = 228.08/x
  3. Step 3: Cross multiply
    433.96x = 649.76 × 228.08
  4. Step 4: Simplify right side
    433.96x = 148,197.74
  5. Step 5: Solve for x
    x = 148,197.74/433.96
  6. Step 6: Final answer
    x = 341.50

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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.