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Finding the Fourth Proportional to 847.82, 1,170.06 and 474.80

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Solution

The fourth proportional to 847.82, 1,170.06 and 474.80 is: 655.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.82 : 1,170.06 = 474.80 : x
  2. Step 2: Convert to fraction form
    847.82/1,170.06 = 474.80/x
  3. Step 3: Cross multiply
    847.82x = 1,170.06 × 474.80
  4. Step 4: Simplify right side
    847.82x = 555,544.49
  5. Step 5: Solve for x
    x = 555,544.49/847.82
  6. Step 6: Final answer
    x = 655.26

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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.