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Finding the Fourth Proportional to 433.47, 649.86 and 238.35

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Solution

The fourth proportional to 433.47, 649.86 and 238.35 is: 357.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.47 : 649.86 = 238.35 : x
  2. Step 2: Convert to fraction form
    433.47/649.86 = 238.35/x
  3. Step 3: Cross multiply
    433.47x = 649.86 × 238.35
  4. Step 4: Simplify right side
    433.47x = 154,894.13
  5. Step 5: Solve for x
    x = 154,894.13/433.47
  6. Step 6: Final answer
    x = 357.34

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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.