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Finding the Fourth Proportional to 1,229.53, 1,696.73 and 669.99

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Solution

The fourth proportional to 1,229.53, 1,696.73 and 669.99 is: 924.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229.53 : 1,696.73 = 669.99 : x
  2. Step 2: Convert to fraction form
    1,229.53/1,696.73 = 669.99/x
  3. Step 3: Cross multiply
    1,229.53x = 1,696.73 × 669.99
  4. Step 4: Simplify right side
    1,229.53x = 1,136,792.13
  5. Step 5: Solve for x
    x = 1,136,792.13/1,229.53
  6. Step 6: Final answer
    x = 924.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.