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Finding the Fourth Proportional to 922.41, 1,272.93 and 508.41

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Solution

The fourth proportional to 922.41, 1,272.93 and 508.41 is: 701.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.41 : 1,272.93 = 508.41 : x
  2. Step 2: Convert to fraction form
    922.41/1,272.93 = 508.41/x
  3. Step 3: Cross multiply
    922.41x = 1,272.93 × 508.41
  4. Step 4: Simplify right side
    922.41x = 647,175.75
  5. Step 5: Solve for x
    x = 647,175.75/922.41
  6. Step 6: Final answer
    x = 701.61

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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.