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Finding the Fourth Proportional to 844.36, 1,166.70 and 649.55

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Solution

The fourth proportional to 844.36, 1,166.70 and 649.55 is: 897.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.36 : 1,166.70 = 649.55 : x
  2. Step 2: Convert to fraction form
    844.36/1,166.70 = 649.55/x
  3. Step 3: Cross multiply
    844.36x = 1,166.70 × 649.55
  4. Step 4: Simplify right side
    844.36x = 757,835.34
  5. Step 5: Solve for x
    x = 757,835.34/844.36
  6. Step 6: Final answer
    x = 897.53

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1.5x scale

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.