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Finding the Fourth Proportional to 404.72, 607.51 and 231.72

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Solution

The fourth proportional to 404.72, 607.51 and 231.72 is: 347.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.72 : 607.51 = 231.72 : x
  2. Step 2: Convert to fraction form
    404.72/607.51 = 231.72/x
  3. Step 3: Cross multiply
    404.72x = 607.51 × 231.72
  4. Step 4: Simplify right side
    404.72x = 140,772.22
  5. Step 5: Solve for x
    x = 140,772.22/404.72
  6. Step 6: Final answer
    x = 347.83

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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.