Home / 1,087.34-1,631.12-307.35

Finding the Fourth Proportional to 1,087.34, 1,631.12 and 307.35

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Solution

The fourth proportional to 1,087.34, 1,631.12 and 307.35 is: 461.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.34 : 1,631.12 = 307.35 : x
  2. Step 2: Convert to fraction form
    1,087.34/1,631.12 = 307.35/x
  3. Step 3: Cross multiply
    1,087.34x = 1,631.12 × 307.35
  4. Step 4: Simplify right side
    1,087.34x = 501,327.73
  5. Step 5: Solve for x
    x = 501,327.73/1,087.34
  6. Step 6: Final answer
    x = 461.06

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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.