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Finding the Fourth Proportional to 692.50, 955.37 and 443.86

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Solution

The fourth proportional to 692.50, 955.37 and 443.86 is: 612.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.50 : 955.37 = 443.86 : x
  2. Step 2: Convert to fraction form
    692.50/955.37 = 443.86/x
  3. Step 3: Cross multiply
    692.50x = 955.37 × 443.86
  4. Step 4: Simplify right side
    692.50x = 424,050.53
  5. Step 5: Solve for x
    x = 424,050.53/692.50
  6. Step 6: Final answer
    x = 612.35

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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.