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Finding the Fourth Proportional to 971.93, 1,464.38 and 879.50

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Solution

The fourth proportional to 971.93, 1,464.38 and 879.50 is: 1,325.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    971.93 : 1,464.38 = 879.50 : x
  2. Step 2: Convert to fraction form
    971.93/1,464.38 = 879.50/x
  3. Step 3: Cross multiply
    971.93x = 1,464.38 × 879.50
  4. Step 4: Simplify right side
    971.93x = 1,287,910.49
  5. Step 5: Solve for x
    x = 1,287,910.49/971.93
  6. Step 6: Final answer
    x = 1,325.11

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.