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Finding the Fourth Proportional to 695.18, 959.46 and 664.04

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Solution

The fourth proportional to 695.18, 959.46 and 664.04 is: 916.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.18 : 959.46 = 664.04 : x
  2. Step 2: Convert to fraction form
    695.18/959.46 = 664.04/x
  3. Step 3: Cross multiply
    695.18x = 959.46 × 664.04
  4. Step 4: Simplify right side
    695.18x = 637,119.82
  5. Step 5: Solve for x
    x = 637,119.82/695.18
  6. Step 6: Final answer
    x = 916.48

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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.