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Finding the Fourth Proportional to 994.08, 1,489.68 and 706.08

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Solution

The fourth proportional to 994.08, 1,489.68 and 706.08 is: 1,058.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.08 : 1,489.68 = 706.08 : x
  2. Step 2: Convert to fraction form
    994.08/1,489.68 = 706.08/x
  3. Step 3: Cross multiply
    994.08x = 1,489.68 × 706.08
  4. Step 4: Simplify right side
    994.08x = 1,051,833.25
  5. Step 5: Solve for x
    x = 1,051,833.25/994.08
  6. Step 6: Final answer
    x = 1,058.10

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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.