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Finding the Fourth Proportional to 867.24, 1,294.67 and 836.86

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Solution

The fourth proportional to 867.24, 1,294.67 and 836.86 is: 1,249.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.24 : 1,294.67 = 836.86 : x
  2. Step 2: Convert to fraction form
    867.24/1,294.67 = 836.86/x
  3. Step 3: Cross multiply
    867.24x = 1,294.67 × 836.86
  4. Step 4: Simplify right side
    867.24x = 1,083,457.54
  5. Step 5: Solve for x
    x = 1,083,457.54/867.24
  6. Step 6: Final answer
    x = 1,249.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.