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Finding the Fourth Proportional to 369.99, 554.54 and 266.56

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Solution

The fourth proportional to 369.99, 554.54 and 266.56 is: 399.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.99 : 554.54 = 266.56 : x
  2. Step 2: Convert to fraction form
    369.99/554.54 = 266.56/x
  3. Step 3: Cross multiply
    369.99x = 554.54 × 266.56
  4. Step 4: Simplify right side
    369.99x = 147,815.46
  5. Step 5: Solve for x
    x = 147,815.46/369.99
  6. Step 6: Final answer
    x = 399.51

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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.