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Finding the Fourth Proportional to 268.89, 403.32 and 153.30

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Solution

The fourth proportional to 268.89, 403.32 and 153.30 is: 229.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.89 : 403.32 = 153.30 : x
  2. Step 2: Convert to fraction form
    268.89/403.32 = 153.30/x
  3. Step 3: Cross multiply
    268.89x = 403.32 × 153.30
  4. Step 4: Simplify right side
    268.89x = 61,828.96
  5. Step 5: Solve for x
    x = 61,828.96/268.89
  6. Step 6: Final answer
    x = 229.94

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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.