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Finding the Fourth Proportional to 1,383.50, 2,075.26 and 357.50

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Solution

The fourth proportional to 1,383.50, 2,075.26 and 357.50 is: 536.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383.50 : 2,075.26 = 357.50 : x
  2. Step 2: Convert to fraction form
    1,383.50/2,075.26 = 357.50/x
  3. Step 3: Cross multiply
    1,383.50x = 2,075.26 × 357.50
  4. Step 4: Simplify right side
    1,383.50x = 741,905.45
  5. Step 5: Solve for x
    x = 741,905.45/1,383.50
  6. Step 6: Final answer
    x = 536.25

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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.