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Finding the Fourth Proportional to 692.35, 955.52 and 670.82

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Solution

The fourth proportional to 692.35, 955.52 and 670.82 is: 925.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.35 : 955.52 = 670.82 : x
  2. Step 2: Convert to fraction form
    692.35/955.52 = 670.82/x
  3. Step 3: Cross multiply
    692.35x = 955.52 × 670.82
  4. Step 4: Simplify right side
    692.35x = 640,981.93
  5. Step 5: Solve for x
    x = 640,981.93/692.35
  6. Step 6: Final answer
    x = 925.81

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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.