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Finding the Fourth Proportional to 369.61, 554.14 and 186.91

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Solution

The fourth proportional to 369.61, 554.14 and 186.91 is: 280.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.61 : 554.14 = 186.91 : x
  2. Step 2: Convert to fraction form
    369.61/554.14 = 186.91/x
  3. Step 3: Cross multiply
    369.61x = 554.14 × 186.91
  4. Step 4: Simplify right side
    369.61x = 103,573.16
  5. Step 5: Solve for x
    x = 103,573.16/369.61
  6. Step 6: Final answer
    x = 280.22

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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.