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Finding the Fourth Proportional to 1,181.12, 1,630.08 and 885.88

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Solution

The fourth proportional to 1,181.12, 1,630.08 and 885.88 is: 1,222.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181.12 : 1,630.08 = 885.88 : x
  2. Step 2: Convert to fraction form
    1,181.12/1,630.08 = 885.88/x
  3. Step 3: Cross multiply
    1,181.12x = 1,630.08 × 885.88
  4. Step 4: Simplify right side
    1,181.12x = 1,444,055.27
  5. Step 5: Solve for x
    x = 1,444,055.27/1,181.12
  6. Step 6: Final answer
    x = 1,222.62

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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.