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Finding the Fourth Proportional to 1,193.46, 1,647.06 and 669.60

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Solution

The fourth proportional to 1,193.46, 1,647.06 and 669.60 is: 924.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193.46 : 1,647.06 = 669.60 : x
  2. Step 2: Convert to fraction form
    1,193.46/1,647.06 = 669.60/x
  3. Step 3: Cross multiply
    1,193.46x = 1,647.06 × 669.60
  4. Step 4: Simplify right side
    1,193.46x = 1,102,871.38
  5. Step 5: Solve for x
    x = 1,102,871.38/1,193.46
  6. Step 6: Final answer
    x = 924.10

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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.