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Finding the Fourth Proportional to 1,197.95, 1,653.23 and 674.01

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Solution

The fourth proportional to 1,197.95, 1,653.23 and 674.01 is: 930.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197.95 : 1,653.23 = 674.01 : x
  2. Step 2: Convert to fraction form
    1,197.95/1,653.23 = 674.01/x
  3. Step 3: Cross multiply
    1,197.95x = 1,653.23 × 674.01
  4. Step 4: Simplify right side
    1,197.95x = 1,114,290.18
  5. Step 5: Solve for x
    x = 1,114,290.18/1,197.95
  6. Step 6: Final answer
    x = 930.17

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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.