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Finding the Fourth Proportional to 692.15, 956.61 and 609.93

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Solution

The fourth proportional to 692.15, 956.61 and 609.93 is: 842.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.15 : 956.61 = 609.93 : x
  2. Step 2: Convert to fraction form
    692.15/956.61 = 609.93/x
  3. Step 3: Cross multiply
    692.15x = 956.61 × 609.93
  4. Step 4: Simplify right side
    692.15x = 583,465.14
  5. Step 5: Solve for x
    x = 583,465.14/692.15
  6. Step 6: Final answer
    x = 842.98

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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.