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Finding the Fourth Proportional to 584.96, 806.70 and 388.28

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Solution

The fourth proportional to 584.96, 806.70 and 388.28 is: 535.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    584.96 : 806.70 = 388.28 : x
  2. Step 2: Convert to fraction form
    584.96/806.70 = 388.28/x
  3. Step 3: Cross multiply
    584.96x = 806.70 × 388.28
  4. Step 4: Simplify right side
    584.96x = 313,225.48
  5. Step 5: Solve for x
    x = 313,225.48/584.96
  6. Step 6: Final answer
    x = 535.46

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.