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Finding the Fourth Proportional to 1,193.56, 1,647.14 and 669.61

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Solution

The fourth proportional to 1,193.56, 1,647.14 and 669.61 is: 924.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193.56 : 1,647.14 = 669.61 : x
  2. Step 2: Convert to fraction form
    1,193.56/1,647.14 = 669.61/x
  3. Step 3: Cross multiply
    1,193.56x = 1,647.14 × 669.61
  4. Step 4: Simplify right side
    1,193.56x = 1,102,934.85
  5. Step 5: Solve for x
    x = 1,102,934.85/1,193.56
  6. Step 6: Final answer
    x = 924.08

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1.5x scale

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.