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Finding the Fourth Proportional to 905.13, 1,356.75 and 357.17

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Solution

The fourth proportional to 905.13, 1,356.75 and 357.17 is: 535.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    905.13 : 1,356.75 = 357.17 : x
  2. Step 2: Convert to fraction form
    905.13/1,356.75 = 357.17/x
  3. Step 3: Cross multiply
    905.13x = 1,356.75 × 357.17
  4. Step 4: Simplify right side
    905.13x = 484,583.61
  5. Step 5: Solve for x
    x = 484,583.61/905.13
  6. Step 6: Final answer
    x = 535.37

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