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Finding the Fourth Proportional to 503.18, 692.85 and 440.66

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Solution

The fourth proportional to 503.18, 692.85 and 440.66 is: 606.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.18 : 692.85 = 440.66 : x
  2. Step 2: Convert to fraction form
    503.18/692.85 = 440.66/x
  3. Step 3: Cross multiply
    503.18x = 692.85 × 440.66
  4. Step 4: Simplify right side
    503.18x = 305,311.28
  5. Step 5: Solve for x
    x = 305,311.28/503.18
  6. Step 6: Final answer
    x = 606.76

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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.