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Finding the Fourth Proportional to 369.29, 553.70 and 186.64

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Solution

The fourth proportional to 369.29, 553.70 and 186.64 is: 279.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.29 : 553.70 = 186.64 : x
  2. Step 2: Convert to fraction form
    369.29/553.70 = 186.64/x
  3. Step 3: Cross multiply
    369.29x = 553.70 × 186.64
  4. Step 4: Simplify right side
    369.29x = 103,341.65
  5. Step 5: Solve for x
    x = 103,341.65/369.29
  6. Step 6: Final answer
    x = 279.84

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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.