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Finding the Fourth Proportional to 503.13, 692.56 and 443.90

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Solution

The fourth proportional to 503.13, 692.56 and 443.90 is: 611.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.13 : 692.56 = 443.90 : x
  2. Step 2: Convert to fraction form
    503.13/692.56 = 443.90/x
  3. Step 3: Cross multiply
    503.13x = 692.56 × 443.90
  4. Step 4: Simplify right side
    503.13x = 307,429.67
  5. Step 5: Solve for x
    x = 307,429.67/503.13
  6. Step 6: Final answer
    x = 611.03

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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.