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Finding the Fourth Proportional to 1,181.49, 1,630.49 and 650.39

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Solution

The fourth proportional to 1,181.49, 1,630.49 and 650.39 is: 897.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181.49 : 1,630.49 = 650.39 : x
  2. Step 2: Convert to fraction form
    1,181.49/1,630.49 = 650.39/x
  3. Step 3: Cross multiply
    1,181.49x = 1,630.49 × 650.39
  4. Step 4: Simplify right side
    1,181.49x = 1,060,442.99
  5. Step 5: Solve for x
    x = 1,060,442.99/1,181.49
  6. Step 6: Final answer
    x = 897.55

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1.5x scale

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.