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Finding the Fourth Proportional to 366.99, 551.75 and 290.90

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Solution

The fourth proportional to 366.99, 551.75 and 290.90 is: 437.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.99 : 551.75 = 290.90 : x
  2. Step 2: Convert to fraction form
    366.99/551.75 = 290.90/x
  3. Step 3: Cross multiply
    366.99x = 551.75 × 290.90
  4. Step 4: Simplify right side
    366.99x = 160,499.86
  5. Step 5: Solve for x
    x = 160,499.86/366.99
  6. Step 6: Final answer
    x = 437.34

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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.