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Finding the Fourth Proportional to 777.37, 1,074.51 and 591.19

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Solution

The fourth proportional to 777.37, 1,074.51 and 591.19 is: 817.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    777.37 : 1,074.51 = 591.19 : x
  2. Step 2: Convert to fraction form
    777.37/1,074.51 = 591.19/x
  3. Step 3: Cross multiply
    777.37x = 1,074.51 × 591.19
  4. Step 4: Simplify right side
    777.37x = 635,239.57
  5. Step 5: Solve for x
    x = 635,239.57/777.37
  6. Step 6: Final answer
    x = 817.17

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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.