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Finding the Fourth Proportional to 235.89, 325.89 and 223.74

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Solution

The fourth proportional to 235.89, 325.89 and 223.74 is: 309.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.89 : 325.89 = 223.74 : x
  2. Step 2: Convert to fraction form
    235.89/325.89 = 223.74/x
  3. Step 3: Cross multiply
    235.89x = 325.89 × 223.74
  4. Step 4: Simplify right side
    235.89x = 72,914.63
  5. Step 5: Solve for x
    x = 72,914.63/235.89
  6. Step 6: Final answer
    x = 309.10

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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.