Home / 1,087.39-1,629.67-437.77

Finding the Fourth Proportional to 1,087.39, 1,629.67 and 437.77

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Solution

The fourth proportional to 1,087.39, 1,629.67 and 437.77 is: 656.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.39 : 1,629.67 = 437.77 : x
  2. Step 2: Convert to fraction form
    1,087.39/1,629.67 = 437.77/x
  3. Step 3: Cross multiply
    1,087.39x = 1,629.67 × 437.77
  4. Step 4: Simplify right side
    1,087.39x = 713,425.26
  5. Step 5: Solve for x
    x = 713,425.26/1,087.39
  6. Step 6: Final answer
    x = 656.09

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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.