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Finding the Fourth Proportional to 610.80, 853.50 and 610.80

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Solution

The fourth proportional to 610.80, 853.50 and 610.80 is: 853.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.80 : 853.50 = 610.80 : x
  2. Step 2: Convert to fraction form
    610.80/853.50 = 610.80/x
  3. Step 3: Cross multiply
    610.80x = 853.50 × 610.80
  4. Step 4: Simplify right side
    610.80x = 521,317.80
  5. Step 5: Solve for x
    x = 521,317.80/610.80
  6. Step 6: Final answer
    x = 853.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.