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Finding the Fourth Proportional to 948.33, 1,422.54 and 766.08

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Solution

The fourth proportional to 948.33, 1,422.54 and 766.08 is: 1,149.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    948.33 : 1,422.54 = 766.08 : x
  2. Step 2: Convert to fraction form
    948.33/1,422.54 = 766.08/x
  3. Step 3: Cross multiply
    948.33x = 1,422.54 × 766.08
  4. Step 4: Simplify right side
    948.33x = 1,089,779.44
  5. Step 5: Solve for x
    x = 1,089,779.44/948.33
  6. Step 6: Final answer
    x = 1,149.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.