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Finding the Fourth Proportional to 1,492.66, 2,238.78 and 452.83

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Solution

The fourth proportional to 1,492.66, 2,238.78 and 452.83 is: 679.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,492.66 : 2,238.78 = 452.83 : x
  2. Step 2: Convert to fraction form
    1,492.66/2,238.78 = 452.83/x
  3. Step 3: Cross multiply
    1,492.66x = 2,238.78 × 452.83
  4. Step 4: Simplify right side
    1,492.66x = 1,013,786.75
  5. Step 5: Solve for x
    x = 1,013,786.75/1,492.66
  6. Step 6: Final answer
    x = 679.18

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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.