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Finding the Fourth Proportional to 862.41, 1,190.12 and 508.33

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Solution

The fourth proportional to 862.41, 1,190.12 and 508.33 is: 701.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    862.41 : 1,190.12 = 508.33 : x
  2. Step 2: Convert to fraction form
    862.41/1,190.12 = 508.33/x
  3. Step 3: Cross multiply
    862.41x = 1,190.12 × 508.33
  4. Step 4: Simplify right side
    862.41x = 604,973.70
  5. Step 5: Solve for x
    x = 604,973.70/862.41
  6. Step 6: Final answer
    x = 701.49

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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.