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Finding the Fourth Proportional to 404.99, 607.55 and 161.69

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Solution

The fourth proportional to 404.99, 607.55 and 161.69 is: 242.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.99 : 607.55 = 161.69 : x
  2. Step 2: Convert to fraction form
    404.99/607.55 = 161.69/x
  3. Step 3: Cross multiply
    404.99x = 607.55 × 161.69
  4. Step 4: Simplify right side
    404.99x = 98,230.91
  5. Step 5: Solve for x
    x = 98,230.91/404.99
  6. Step 6: Final answer
    x = 242.55

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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.