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Finding the Fourth Proportional to 404.88, 608.12 and 347.08

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Solution

The fourth proportional to 404.88, 608.12 and 347.08 is: 521.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.88 : 608.12 = 347.08 : x
  2. Step 2: Convert to fraction form
    404.88/608.12 = 347.08/x
  3. Step 3: Cross multiply
    404.88x = 608.12 × 347.08
  4. Step 4: Simplify right side
    404.88x = 211,066.29
  5. Step 5: Solve for x
    x = 211,066.29/404.88
  6. Step 6: Final answer
    x = 521.31

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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.