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Finding the Fourth Proportional to 403.62, 556.99 and 235.61

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Solution

The fourth proportional to 403.62, 556.99 and 235.61 is: 325.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.62 : 556.99 = 235.61 : x
  2. Step 2: Convert to fraction form
    403.62/556.99 = 235.61/x
  3. Step 3: Cross multiply
    403.62x = 556.99 × 235.61
  4. Step 4: Simplify right side
    403.62x = 131,232.41
  5. Step 5: Solve for x
    x = 131,232.41/403.62
  6. Step 6: Final answer
    x = 325.14

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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.