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Finding the Fourth Proportional to 692.17, 953.47 and 481.98

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Solution

The fourth proportional to 692.17, 953.47 and 481.98 is: 663.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.17 : 953.47 = 481.98 : x
  2. Step 2: Convert to fraction form
    692.17/953.47 = 481.98/x
  3. Step 3: Cross multiply
    692.17x = 953.47 × 481.98
  4. Step 4: Simplify right side
    692.17x = 459,549.60
  5. Step 5: Solve for x
    x = 459,549.60/692.17
  6. Step 6: Final answer
    x = 663.93

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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.