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Finding the Fourth Proportional to 980.06, 1,352.30 and 587.07

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Solution

The fourth proportional to 980.06, 1,352.30 and 587.07 is: 810.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    980.06 : 1,352.30 = 587.07 : x
  2. Step 2: Convert to fraction form
    980.06/1,352.30 = 587.07/x
  3. Step 3: Cross multiply
    980.06x = 1,352.30 × 587.07
  4. Step 4: Simplify right side
    980.06x = 793,891.83
  5. Step 5: Solve for x
    x = 793,891.83/980.06
  6. Step 6: Final answer
    x = 810.05

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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.