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Finding the Fourth Proportional to 619.36, 848.21 and 611.26

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Solution

The fourth proportional to 619.36, 848.21 and 611.26 is: 837.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.36 : 848.21 = 611.26 : x
  2. Step 2: Convert to fraction form
    619.36/848.21 = 611.26/x
  3. Step 3: Cross multiply
    619.36x = 848.21 × 611.26
  4. Step 4: Simplify right side
    619.36x = 518,476.84
  5. Step 5: Solve for x
    x = 518,476.84/619.36
  6. Step 6: Final answer
    x = 837.12

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.