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Finding the Fourth Proportional to 1,498.70, 2,247.08 and 620.97

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Solution

The fourth proportional to 1,498.70, 2,247.08 and 620.97 is: 931.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,498.70 : 2,247.08 = 620.97 : x
  2. Step 2: Convert to fraction form
    1,498.70/2,247.08 = 620.97/x
  3. Step 3: Cross multiply
    1,498.70x = 2,247.08 × 620.97
  4. Step 4: Simplify right side
    1,498.70x = 1,395,366.61
  5. Step 5: Solve for x
    x = 1,395,366.61/1,498.70
  6. Step 6: Final answer
    x = 931.05

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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.