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Finding the Fourth Proportional to 404.96, 607.52 and 131.08

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Solution

The fourth proportional to 404.96, 607.52 and 131.08 is: 196.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.96 : 607.52 = 131.08 : x
  2. Step 2: Convert to fraction form
    404.96/607.52 = 131.08/x
  3. Step 3: Cross multiply
    404.96x = 607.52 × 131.08
  4. Step 4: Simplify right side
    404.96x = 79,632.53
  5. Step 5: Solve for x
    x = 79,632.53/404.96
  6. Step 6: Final answer
    x = 196.64

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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.