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Finding the Fourth Proportional to 982.59, 1,355.96 and 562.93

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Solution

The fourth proportional to 982.59, 1,355.96 and 562.93 is: 776.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    982.59 : 1,355.96 = 562.93 : x
  2. Step 2: Convert to fraction form
    982.59/1,355.96 = 562.93/x
  3. Step 3: Cross multiply
    982.59x = 1,355.96 × 562.93
  4. Step 4: Simplify right side
    982.59x = 763,309.44
  5. Step 5: Solve for x
    x = 763,309.44/982.59
  6. Step 6: Final answer
    x = 776.83

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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.