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Finding the Fourth Proportional to 375.08, 561.66 and 266.60

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Solution

The fourth proportional to 375.08, 561.66 and 266.60 is: 399.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.08 : 561.66 = 266.60 : x
  2. Step 2: Convert to fraction form
    375.08/561.66 = 266.60/x
  3. Step 3: Cross multiply
    375.08x = 561.66 × 266.60
  4. Step 4: Simplify right side
    375.08x = 149,738.56
  5. Step 5: Solve for x
    x = 149,738.56/375.08
  6. Step 6: Final answer
    x = 399.22

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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.