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Finding the Fourth Proportional to 610, 843.40 and 582.80

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Solution

The fourth proportional to 610, 843.40 and 582.80 is: 805.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    610 : 843.40 = 582.80 : x
  2. Step 2: Convert to fraction form
    610/843.40 = 582.80/x
  3. Step 3: Cross multiply
    610x = 843.40 × 582.80
  4. Step 4: Simplify right side
    610x = 491,533.52
  5. Step 5: Solve for x
    x = 491,533.52/610
  6. Step 6: Final answer
    x = 805.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.