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Finding the Fourth Proportional to 994.44, 1,492.20 and 670.08

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Solution

The fourth proportional to 994.44, 1,492.20 and 670.08 is: 1,005.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.44 : 1,492.20 = 670.08 : x
  2. Step 2: Convert to fraction form
    994.44/1,492.20 = 670.08/x
  3. Step 3: Cross multiply
    994.44x = 1,492.20 × 670.08
  4. Step 4: Simplify right side
    994.44x = 999,893.38
  5. Step 5: Solve for x
    x = 999,893.38/994.44
  6. Step 6: Final answer
    x = 1,005.48

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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.