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Finding the Fourth Proportional to 884.07, 1,220.07 and 491.08

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Solution

The fourth proportional to 884.07, 1,220.07 and 491.08 is: 677.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.07 : 1,220.07 = 491.08 : x
  2. Step 2: Convert to fraction form
    884.07/1,220.07 = 491.08/x
  3. Step 3: Cross multiply
    884.07x = 1,220.07 × 491.08
  4. Step 4: Simplify right side
    884.07x = 599,151.98
  5. Step 5: Solve for x
    x = 599,151.98/884.07
  6. Step 6: Final answer
    x = 677.72

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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.