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Finding the Fourth Proportional to 620.40, 848.49 and 604.20

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Solution

The fourth proportional to 620.40, 848.49 and 604.20 is: 826.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.40 : 848.49 = 604.20 : x
  2. Step 2: Convert to fraction form
    620.40/848.49 = 604.20/x
  3. Step 3: Cross multiply
    620.40x = 848.49 × 604.20
  4. Step 4: Simplify right side
    620.40x = 512,657.66
  5. Step 5: Solve for x
    x = 512,657.66/620.40
  6. Step 6: Final answer
    x = 826.33

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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.