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Finding the Fourth Proportional to 1,306.76, 1,802.91 and 1,182.02

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Solution

The fourth proportional to 1,306.76, 1,802.91 and 1,182.02 is: 1,630.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306.76 : 1,802.91 = 1,182.02 : x
  2. Step 2: Convert to fraction form
    1,306.76/1,802.91 = 1,182.02/x
  3. Step 3: Cross multiply
    1,306.76x = 1,802.91 × 1,182.02
  4. Step 4: Simplify right side
    1,306.76x = 2,131,075.68
  5. Step 5: Solve for x
    x = 2,131,075.68/1,306.76
  6. Step 6: Final answer
    x = 1,630.81

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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.