Home / 1,087.45-1,631.27-307.46

Finding the Fourth Proportional to 1,087.45, 1,631.27 and 307.46

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Solution

The fourth proportional to 1,087.45, 1,631.27 and 307.46 is: 461.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.45 : 1,631.27 = 307.46 : x
  2. Step 2: Convert to fraction form
    1,087.45/1,631.27 = 307.46/x
  3. Step 3: Cross multiply
    1,087.45x = 1,631.27 × 307.46
  4. Step 4: Simplify right side
    1,087.45x = 501,555.12
  5. Step 5: Solve for x
    x = 501,555.12/1,087.45
  6. Step 6: Final answer
    x = 461.22

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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.