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Finding the Fourth Proportional to 853.03, 1,276.26 and 577.81

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Solution

The fourth proportional to 853.03, 1,276.26 and 577.81 is: 864.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    853.03 : 1,276.26 = 577.81 : x
  2. Step 2: Convert to fraction form
    853.03/1,276.26 = 577.81/x
  3. Step 3: Cross multiply
    853.03x = 1,276.26 × 577.81
  4. Step 4: Simplify right side
    853.03x = 737,435.79
  5. Step 5: Solve for x
    x = 737,435.79/853.03
  6. Step 6: Final answer
    x = 864.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.