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Finding the Fourth Proportional to 1,798.79, 2,698.00 and 628.67

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Solution

The fourth proportional to 1,798.79, 2,698.00 and 628.67 is: 942.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,798.79 : 2,698.00 = 628.67 : x
  2. Step 2: Convert to fraction form
    1,798.79/2,698.00 = 628.67/x
  3. Step 3: Cross multiply
    1,798.79x = 2,698.00 × 628.67
  4. Step 4: Simplify right side
    1,798.79x = 1,696,156.83
  5. Step 5: Solve for x
    x = 1,696,156.83/1,798.79
  6. Step 6: Final answer
    x = 942.95

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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.