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Finding the Fourth Proportional to 692.39, 955.49 and 377.64

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Solution

The fourth proportional to 692.39, 955.49 and 377.64 is: 521.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.39 : 955.49 = 377.64 : x
  2. Step 2: Convert to fraction form
    692.39/955.49 = 377.64/x
  3. Step 3: Cross multiply
    692.39x = 955.49 × 377.64
  4. Step 4: Simplify right side
    692.39x = 360,829.36
  5. Step 5: Solve for x
    x = 360,829.36/692.39
  6. Step 6: Final answer
    x = 521.14

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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.