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Finding the Fourth Proportional to 615.73, 853.38 and 604.21

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Solution

The fourth proportional to 615.73, 853.38 and 604.21 is: 837.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.73 : 853.38 = 604.21 : x
  2. Step 2: Convert to fraction form
    615.73/853.38 = 604.21/x
  3. Step 3: Cross multiply
    615.73x = 853.38 × 604.21
  4. Step 4: Simplify right side
    615.73x = 515,617.71
  5. Step 5: Solve for x
    x = 515,617.71/615.73
  6. Step 6: Final answer
    x = 837.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.