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Finding the Fourth Proportional to 924.06, 1,272.39 and 865.30

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Solution

The fourth proportional to 924.06, 1,272.39 and 865.30 is: 1,191.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.06 : 1,272.39 = 865.30 : x
  2. Step 2: Convert to fraction form
    924.06/1,272.39 = 865.30/x
  3. Step 3: Cross multiply
    924.06x = 1,272.39 × 865.30
  4. Step 4: Simplify right side
    924.06x = 1,100,999.07
  5. Step 5: Solve for x
    x = 1,100,999.07/924.06
  6. Step 6: Final answer
    x = 1,191.48

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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.