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Finding the Fourth Proportional to 369.78, 554.58 and 153.32

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Solution

The fourth proportional to 369.78, 554.58 and 153.32 is: 229.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.78 : 554.58 = 153.32 : x
  2. Step 2: Convert to fraction form
    369.78/554.58 = 153.32/x
  3. Step 3: Cross multiply
    369.78x = 554.58 × 153.32
  4. Step 4: Simplify right side
    369.78x = 85,028.21
  5. Step 5: Solve for x
    x = 85,028.21/369.78
  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.