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Finding the Fourth Proportional to 847.06, 1,168.97 and 515.77

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Solution

The fourth proportional to 847.06, 1,168.97 and 515.77 is: 711.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.06 : 1,168.97 = 515.77 : x
  2. Step 2: Convert to fraction form
    847.06/1,168.97 = 515.77/x
  3. Step 3: Cross multiply
    847.06x = 1,168.97 × 515.77
  4. Step 4: Simplify right side
    847.06x = 602,914.16
  5. Step 5: Solve for x
    x = 602,914.16/847.06
  6. Step 6: Final answer
    x = 711.77

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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.