Home / 1,087.10-1,630.63-356.38

Finding the Fourth Proportional to 1,087.10, 1,630.63 and 356.38

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Solution

The fourth proportional to 1,087.10, 1,630.63 and 356.38 is: 534.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.10 : 1,630.63 = 356.38 : x
  2. Step 2: Convert to fraction form
    1,087.10/1,630.63 = 356.38/x
  3. Step 3: Cross multiply
    1,087.10x = 1,630.63 × 356.38
  4. Step 4: Simplify right side
    1,087.10x = 581,123.92
  5. Step 5: Solve for x
    x = 581,123.92/1,087.10
  6. Step 6: Final answer
    x = 534.56

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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.