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Finding the Fourth Proportional to 692.49, 955.31 and 483.11

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Solution

The fourth proportional to 692.49, 955.31 and 483.11 is: 666.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.49 : 955.31 = 483.11 : x
  2. Step 2: Convert to fraction form
    692.49/955.31 = 483.11/x
  3. Step 3: Cross multiply
    692.49x = 955.31 × 483.11
  4. Step 4: Simplify right side
    692.49x = 461,519.81
  5. Step 5: Solve for x
    x = 461,519.81/692.49
  6. Step 6: Final answer
    x = 666.46

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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.