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Finding the Fourth Proportional to 783.98, 1,175.82 and 236.06

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Solution

The fourth proportional to 783.98, 1,175.82 and 236.06 is: 354.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    783.98 : 1,175.82 = 236.06 : x
  2. Step 2: Convert to fraction form
    783.98/1,175.82 = 236.06/x
  3. Step 3: Cross multiply
    783.98x = 1,175.82 × 236.06
  4. Step 4: Simplify right side
    783.98x = 277,568.33
  5. Step 5: Solve for x
    x = 277,568.33/783.98
  6. Step 6: Final answer
    x = 354.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.