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Finding the Fourth Proportional to 369.57, 554.32 and 153.15

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Solution

The fourth proportional to 369.57, 554.32 and 153.15 is: 229.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.57 : 554.32 = 153.15 : x
  2. Step 2: Convert to fraction form
    369.57/554.32 = 153.15/x
  3. Step 3: Cross multiply
    369.57x = 554.32 × 153.15
  4. Step 4: Simplify right side
    369.57x = 84,894.11
  5. Step 5: Solve for x
    x = 84,894.11/369.57
  6. Step 6: Final answer
    x = 229.71

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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.