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Finding the Fourth Proportional to 862.86, 1,190.40 and 601.03

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Solution

The fourth proportional to 862.86, 1,190.40 and 601.03 is: 829.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    862.86 : 1,190.40 = 601.03 : x
  2. Step 2: Convert to fraction form
    862.86/1,190.40 = 601.03/x
  3. Step 3: Cross multiply
    862.86x = 1,190.40 × 601.03
  4. Step 4: Simplify right side
    862.86x = 715,466.11
  5. Step 5: Solve for x
    x = 715,466.11/862.86
  6. Step 6: Final answer
    x = 829.18

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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.