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Finding the Fourth Proportional to 692.88, 955.02 and 553.56

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Solution

The fourth proportional to 692.88, 955.02 and 553.56 is: 762.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.88 : 955.02 = 553.56 : x
  2. Step 2: Convert to fraction form
    692.88/955.02 = 553.56/x
  3. Step 3: Cross multiply
    692.88x = 955.02 × 553.56
  4. Step 4: Simplify right side
    692.88x = 528,660.87
  5. Step 5: Solve for x
    x = 528,660.87/692.88
  6. Step 6: Final answer
    x = 762.99

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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.