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Finding the Fourth Proportional to 695.19, 958.05 and 498.36

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Solution

The fourth proportional to 695.19, 958.05 and 498.36 is: 686.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.19 : 958.05 = 498.36 : x
  2. Step 2: Convert to fraction form
    695.19/958.05 = 498.36/x
  3. Step 3: Cross multiply
    695.19x = 958.05 × 498.36
  4. Step 4: Simplify right side
    695.19x = 477,453.80
  5. Step 5: Solve for x
    x = 477,453.80/695.19
  6. Step 6: Final answer
    x = 686.80

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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.