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Finding the Fourth Proportional to 695.61, 960 and 443.49

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Solution

The fourth proportional to 695.61, 960 and 443.49 is: 612.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.61 : 960 = 443.49 : x
  2. Step 2: Convert to fraction form
    695.61/960 = 443.49/x
  3. Step 3: Cross multiply
    695.61x = 960 × 443.49
  4. Step 4: Simplify right side
    695.61x = 425,750.40
  5. Step 5: Solve for x
    x = 425,750.40/695.61
  6. Step 6: Final answer
    x = 612.05

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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.