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Finding the Fourth Proportional to 893.03, 1,339.51 and 243.77

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Solution

The fourth proportional to 893.03, 1,339.51 and 243.77 is: 365.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.03 : 1,339.51 = 243.77 : x
  2. Step 2: Convert to fraction form
    893.03/1,339.51 = 243.77/x
  3. Step 3: Cross multiply
    893.03x = 1,339.51 × 243.77
  4. Step 4: Simplify right side
    893.03x = 326,524.44
  5. Step 5: Solve for x
    x = 326,524.44/893.03
  6. Step 6: Final answer
    x = 365.64

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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.