Home / 1,087.38-1,629.84-437.34

Finding the Fourth Proportional to 1,087.38, 1,629.84 and 437.34

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Solution

The fourth proportional to 1,087.38, 1,629.84 and 437.34 is: 655.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.38 : 1,629.84 = 437.34 : x
  2. Step 2: Convert to fraction form
    1,087.38/1,629.84 = 437.34/x
  3. Step 3: Cross multiply
    1,087.38x = 1,629.84 × 437.34
  4. Step 4: Simplify right side
    1,087.38x = 712,794.23
  5. Step 5: Solve for x
    x = 712,794.23/1,087.38
  6. Step 6: Final answer
    x = 655.52

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1.5x scale

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.