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Finding the Fourth Proportional to 692.40, 954.81 and 635.48

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Solution

The fourth proportional to 692.40, 954.81 and 635.48 is: 876.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.40 : 954.81 = 635.48 : x
  2. Step 2: Convert to fraction form
    692.40/954.81 = 635.48/x
  3. Step 3: Cross multiply
    692.40x = 954.81 × 635.48
  4. Step 4: Simplify right side
    692.40x = 606,757.88
  5. Step 5: Solve for x
    x = 606,757.88/692.40
  6. Step 6: Final answer
    x = 876.31

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1.5x scale

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.