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Finding the Fourth Proportional to 848.86, 1,161.34 and 845.22

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Solution

The fourth proportional to 848.86, 1,161.34 and 845.22 is: 1,156.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.86 : 1,161.34 = 845.22 : x
  2. Step 2: Convert to fraction form
    848.86/1,161.34 = 845.22/x
  3. Step 3: Cross multiply
    848.86x = 1,161.34 × 845.22
  4. Step 4: Simplify right side
    848.86x = 981,587.79
  5. Step 5: Solve for x
    x = 981,587.79/848.86
  6. Step 6: Final answer
    x = 1,156.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.