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Finding the Fourth Proportional to 620.64, 848.88 and 610.56

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Solution

The fourth proportional to 620.64, 848.88 and 610.56 is: 835.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.64 : 848.88 = 610.56 : x
  2. Step 2: Convert to fraction form
    620.64/848.88 = 610.56/x
  3. Step 3: Cross multiply
    620.64x = 848.88 × 610.56
  4. Step 4: Simplify right side
    620.64x = 518,292.17
  5. Step 5: Solve for x
    x = 518,292.17/620.64
  6. Step 6: Final answer
    x = 835.09

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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.