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Finding the Fourth Proportional to 697.95, 963.36 and 418.26

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Solution

The fourth proportional to 697.95, 963.36 and 418.26 is: 577.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.95 : 963.36 = 418.26 : x
  2. Step 2: Convert to fraction form
    697.95/963.36 = 418.26/x
  3. Step 3: Cross multiply
    697.95x = 963.36 × 418.26
  4. Step 4: Simplify right side
    697.95x = 402,934.95
  5. Step 5: Solve for x
    x = 402,934.95/697.95
  6. Step 6: Final answer
    x = 577.31

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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.