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Finding the Fourth Proportional to 982.98, 1,356.49 and 590.22

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Solution

The fourth proportional to 982.98, 1,356.49 and 590.22 is: 814.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    982.98 : 1,356.49 = 590.22 : x
  2. Step 2: Convert to fraction form
    982.98/1,356.49 = 590.22/x
  3. Step 3: Cross multiply
    982.98x = 1,356.49 × 590.22
  4. Step 4: Simplify right side
    982.98x = 800,627.53
  5. Step 5: Solve for x
    x = 800,627.53/982.98
  6. Step 6: Final answer
    x = 814.49

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1.5x scale

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.