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Finding the Fourth Proportional to 692.33, 1,039.40 and 635.01

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Solution

The fourth proportional to 692.33, 1,039.40 and 635.01 is: 953.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.33 : 1,039.40 = 635.01 : x
  2. Step 2: Convert to fraction form
    692.33/1,039.40 = 635.01/x
  3. Step 3: Cross multiply
    692.33x = 1,039.40 × 635.01
  4. Step 4: Simplify right side
    692.33x = 660,026.22
  5. Step 5: Solve for x
    x = 660,026.22/692.33
  6. Step 6: Final answer
    x = 953.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.