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Finding the Fourth Proportional to 692.75, 955.55 and 443.68

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Solution

The fourth proportional to 692.75, 955.55 and 443.68 is: 611.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.75 : 955.55 = 443.68 : x
  2. Step 2: Convert to fraction form
    692.75/955.55 = 443.68/x
  3. Step 3: Cross multiply
    692.75x = 955.55 × 443.68
  4. Step 4: Simplify right side
    692.75x = 423,954.65
  5. Step 5: Solve for x
    x = 423,954.65/692.75
  6. Step 6: Final answer
    x = 611.99

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Find fourth proportional to 346.38, 477.77 and 221.84
Half scale
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Double scale
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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.