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Finding the Fourth Proportional to 858.89, 1,185.48 and 544.34

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Solution

The fourth proportional to 858.89, 1,185.48 and 544.34 is: 751.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    858.89 : 1,185.48 = 544.34 : x
  2. Step 2: Convert to fraction form
    858.89/1,185.48 = 544.34/x
  3. Step 3: Cross multiply
    858.89x = 1,185.48 × 544.34
  4. Step 4: Simplify right side
    858.89x = 645,298.26
  5. Step 5: Solve for x
    x = 645,298.26/858.89
  6. Step 6: Final answer
    x = 751.32

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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.