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Finding the Fourth Proportional to 982.00, 1,354.82 and 608.84

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Solution

The fourth proportional to 982.00, 1,354.82 and 608.84 is: 839.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    982.00 : 1,354.82 = 608.84 : x
  2. Step 2: Convert to fraction form
    982.00/1,354.82 = 608.84/x
  3. Step 3: Cross multiply
    982.00x = 1,354.82 × 608.84
  4. Step 4: Simplify right side
    982.00x = 824,868.61
  5. Step 5: Solve for x
    x = 824,868.61/982.00
  6. Step 6: Final answer
    x = 839.99

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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.