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Finding the Fourth Proportional to 895.86, 1,236.06 and 617.22

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Solution

The fourth proportional to 895.86, 1,236.06 and 617.22 is: 851.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.86 : 1,236.06 = 617.22 : x
  2. Step 2: Convert to fraction form
    895.86/1,236.06 = 617.22/x
  3. Step 3: Cross multiply
    895.86x = 1,236.06 × 617.22
  4. Step 4: Simplify right side
    895.86x = 762,920.95
  5. Step 5: Solve for x
    x = 762,920.95/895.86
  6. Step 6: Final answer
    x = 851.61

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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.