Home / 1,087.19-1,630.17-356.57

Finding the Fourth Proportional to 1,087.19, 1,630.17 and 356.57

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Solution

The fourth proportional to 1,087.19, 1,630.17 and 356.57 is: 534.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.19 : 1,630.17 = 356.57 : x
  2. Step 2: Convert to fraction form
    1,087.19/1,630.17 = 356.57/x
  3. Step 3: Cross multiply
    1,087.19x = 1,630.17 × 356.57
  4. Step 4: Simplify right side
    1,087.19x = 581,261.57
  5. Step 5: Solve for x
    x = 581,261.57/1,087.19
  6. Step 6: Final answer
    x = 534.65

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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.