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Finding the Fourth Proportional to 692.99, 956.32 and 378.26

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Solution

The fourth proportional to 692.99, 956.32 and 378.26 is: 521.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.99 : 956.32 = 378.26 : x
  2. Step 2: Convert to fraction form
    692.99/956.32 = 378.26/x
  3. Step 3: Cross multiply
    692.99x = 956.32 × 378.26
  4. Step 4: Simplify right side
    692.99x = 361,731.88
  5. Step 5: Solve for x
    x = 361,731.88/692.99
  6. Step 6: Final answer
    x = 521.99

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.