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Finding the Fourth Proportional to 692.39, 955.53 and 377.68

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Solution

The fourth proportional to 692.39, 955.53 and 377.68 is: 521.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.39 : 955.53 = 377.68 : x
  2. Step 2: Convert to fraction form
    692.39/955.53 = 377.68/x
  3. Step 3: Cross multiply
    692.39x = 955.53 × 377.68
  4. Step 4: Simplify right side
    692.39x = 360,877.90
  5. Step 5: Solve for x
    x = 360,877.90/692.39
  6. Step 6: Final answer
    x = 521.21

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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.