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Finding the Fourth Proportional to 619.98, 859.28 and 608.46

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Solution

The fourth proportional to 619.98, 859.28 and 608.46 is: 843.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.98 : 859.28 = 608.46 : x
  2. Step 2: Convert to fraction form
    619.98/859.28 = 608.46/x
  3. Step 3: Cross multiply
    619.98x = 859.28 × 608.46
  4. Step 4: Simplify right side
    619.98x = 522,837.51
  5. Step 5: Solve for x
    x = 522,837.51/619.98
  6. Step 6: Final answer
    x = 843.31

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.