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Finding the Fourth Proportional to 1,792.79, 2,688.99 and 622.58

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Solution

The fourth proportional to 1,792.79, 2,688.99 and 622.58 is: 933.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,792.79 : 2,688.99 = 622.58 : x
  2. Step 2: Convert to fraction form
    1,792.79/2,688.99 = 622.58/x
  3. Step 3: Cross multiply
    1,792.79x = 2,688.99 × 622.58
  4. Step 4: Simplify right side
    1,792.79x = 1,674,097.95
  5. Step 5: Solve for x
    x = 1,674,097.95/1,792.79
  6. Step 6: Final answer
    x = 933.80

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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.