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Finding the Fourth Proportional to 879.51, 1,317.99 and 601.60

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Solution

The fourth proportional to 879.51, 1,317.99 and 601.60 is: 901.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    879.51 : 1,317.99 = 601.60 : x
  2. Step 2: Convert to fraction form
    879.51/1,317.99 = 601.60/x
  3. Step 3: Cross multiply
    879.51x = 1,317.99 × 601.60
  4. Step 4: Simplify right side
    879.51x = 792,902.78
  5. Step 5: Solve for x
    x = 792,902.78/879.51
  6. Step 6: Final answer
    x = 901.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.