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Finding the Fourth Proportional to 1,107.00, 1,526.03 and 708.61

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Solution

The fourth proportional to 1,107.00, 1,526.03 and 708.61 is: 976.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107.00 : 1,526.03 = 708.61 : x
  2. Step 2: Convert to fraction form
    1,107.00/1,526.03 = 708.61/x
  3. Step 3: Cross multiply
    1,107.00x = 1,526.03 × 708.61
  4. Step 4: Simplify right side
    1,107.00x = 1,081,352.76
  5. Step 5: Solve for x
    x = 1,081,352.76/1,107.00
  6. Step 6: Final answer
    x = 976.83

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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.