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Finding the Fourth Proportional to 1,106.57, 1,660.13 and 376.15

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Solution

The fourth proportional to 1,106.57, 1,660.13 and 376.15 is: 564.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,106.57 : 1,660.13 = 376.15 : x
  2. Step 2: Convert to fraction form
    1,106.57/1,660.13 = 376.15/x
  3. Step 3: Cross multiply
    1,106.57x = 1,660.13 × 376.15
  4. Step 4: Simplify right side
    1,106.57x = 624,457.90
  5. Step 5: Solve for x
    x = 624,457.90/1,106.57
  6. Step 6: Final answer
    x = 564.32

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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.