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Finding the Fourth Proportional to 895.37, 1,236.17 and 615.51

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Solution

The fourth proportional to 895.37, 1,236.17 and 615.51 is: 849.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.37 : 1,236.17 = 615.51 : x
  2. Step 2: Convert to fraction form
    895.37/1,236.17 = 615.51/x
  3. Step 3: Cross multiply
    895.37x = 1,236.17 × 615.51
  4. Step 4: Simplify right side
    895.37x = 760,876.54
  5. Step 5: Solve for x
    x = 760,876.54/895.37
  6. Step 6: Final answer
    x = 849.79

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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.