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Finding the Fourth Proportional to 404.77, 607.18 and 130.85

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Solution

The fourth proportional to 404.77, 607.18 and 130.85 is: 196.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.77 : 607.18 = 130.85 : x
  2. Step 2: Convert to fraction form
    404.77/607.18 = 130.85/x
  3. Step 3: Cross multiply
    404.77x = 607.18 × 130.85
  4. Step 4: Simplify right side
    404.77x = 79,449.50
  5. Step 5: Solve for x
    x = 79,449.50/404.77
  6. Step 6: Final answer
    x = 196.29

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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.