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Finding the Fourth Proportional to 395.02, 591.99 and 266.50

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Solution

The fourth proportional to 395.02, 591.99 and 266.50 is: 399.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.02 : 591.99 = 266.50 : x
  2. Step 2: Convert to fraction form
    395.02/591.99 = 266.50/x
  3. Step 3: Cross multiply
    395.02x = 591.99 × 266.50
  4. Step 4: Simplify right side
    395.02x = 157,765.34
  5. Step 5: Solve for x
    x = 157,765.34/395.02
  6. Step 6: Final answer
    x = 399.39

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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.