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Finding the Fourth Proportional to 853.49, 1,176.73 and 573.28

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Solution

The fourth proportional to 853.49, 1,176.73 and 573.28 is: 790.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    853.49 : 1,176.73 = 573.28 : x
  2. Step 2: Convert to fraction form
    853.49/1,176.73 = 573.28/x
  3. Step 3: Cross multiply
    853.49x = 1,176.73 × 573.28
  4. Step 4: Simplify right side
    853.49x = 674,591.40
  5. Step 5: Solve for x
    x = 674,591.40/853.49
  6. Step 6: Final answer
    x = 790.39

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Double scale
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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.