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Finding the Fourth Proportional to 887.09, 1,224.13 and 494.09

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Solution

The fourth proportional to 887.09, 1,224.13 and 494.09 is: 681.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.09 : 1,224.13 = 494.09 : x
  2. Step 2: Convert to fraction form
    887.09/1,224.13 = 494.09/x
  3. Step 3: Cross multiply
    887.09x = 1,224.13 × 494.09
  4. Step 4: Simplify right side
    887.09x = 604,821.80
  5. Step 5: Solve for x
    x = 604,821.80/887.09
  6. Step 6: Final answer
    x = 681.80

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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.