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Finding the Fourth Proportional to 895.10, 1,236.15 and 616.05

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Solution

The fourth proportional to 895.10, 1,236.15 and 616.05 is: 850.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.10 : 1,236.15 = 616.05 : x
  2. Step 2: Convert to fraction form
    895.10/1,236.15 = 616.05/x
  3. Step 3: Cross multiply
    895.10x = 1,236.15 × 616.05
  4. Step 4: Simplify right side
    895.10x = 761,527.13
  5. Step 5: Solve for x
    x = 761,527.13/895.10
  6. Step 6: Final answer
    x = 850.78

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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.