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Finding the Fourth Proportional to 1,107.04, 1,661.10 and 898.60

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Solution

The fourth proportional to 1,107.04, 1,661.10 and 898.60 is: 1,348.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107.04 : 1,661.10 = 898.60 : x
  2. Step 2: Convert to fraction form
    1,107.04/1,661.10 = 898.60/x
  3. Step 3: Cross multiply
    1,107.04x = 1,661.10 × 898.60
  4. Step 4: Simplify right side
    1,107.04x = 1,492,664.46
  5. Step 5: Solve for x
    x = 1,492,664.46/1,107.04
  6. Step 6: Final answer
    x = 1,348.34

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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.