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Finding the Fourth Proportional to 1,492.74, 2,239.99 and 671.04

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Solution

The fourth proportional to 1,492.74, 2,239.99 and 671.04 is: 1,006.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,492.74 : 2,239.99 = 671.04 : x
  2. Step 2: Convert to fraction form
    1,492.74/2,239.99 = 671.04/x
  3. Step 3: Cross multiply
    1,492.74x = 2,239.99 × 671.04
  4. Step 4: Simplify right side
    1,492.74x = 1,503,121.21
  5. Step 5: Solve for x
    x = 1,503,121.21/1,492.74
  6. Step 6: Final answer
    x = 1,006.95

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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.