Home / 1,087.29-1,629.86-437.54

Finding the Fourth Proportional to 1,087.29, 1,629.86 and 437.54

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Solution

The fourth proportional to 1,087.29, 1,629.86 and 437.54 is: 655.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.29 : 1,629.86 = 437.54 : x
  2. Step 2: Convert to fraction form
    1,087.29/1,629.86 = 437.54/x
  3. Step 3: Cross multiply
    1,087.29x = 1,629.86 × 437.54
  4. Step 4: Simplify right side
    1,087.29x = 713,118.61
  5. Step 5: Solve for x
    x = 713,118.61/1,087.29
  6. Step 6: Final answer
    x = 655.87

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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.