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Finding the Fourth Proportional to 1,492.94, 2,237.13 and 626.78

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Solution

The fourth proportional to 1,492.94, 2,237.13 and 626.78 is: 939.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,492.94 : 2,237.13 = 626.78 : x
  2. Step 2: Convert to fraction form
    1,492.94/2,237.13 = 626.78/x
  3. Step 3: Cross multiply
    1,492.94x = 2,237.13 × 626.78
  4. Step 4: Simplify right side
    1,492.94x = 1,402,188.34
  5. Step 5: Solve for x
    x = 1,402,188.34/1,492.94
  6. Step 6: Final answer
    x = 939.21

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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.