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Finding the Fourth Proportional to 404.64, 607.04 and 161.15

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Solution

The fourth proportional to 404.64, 607.04 and 161.15 is: 241.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.64 : 607.04 = 161.15 : x
  2. Step 2: Convert to fraction form
    404.64/607.04 = 161.15/x
  3. Step 3: Cross multiply
    404.64x = 607.04 × 161.15
  4. Step 4: Simplify right side
    404.64x = 97,820.66
  5. Step 5: Solve for x
    x = 97,820.66/404.64
  6. Step 6: Final answer
    x = 241.75

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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.