Home / 1,218.38-1,827.63-352.76

Finding the Fourth Proportional to 1,218.38, 1,827.63 and 352.76

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Solution

The fourth proportional to 1,218.38, 1,827.63 and 352.76 is: 529.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.38 : 1,827.63 = 352.76 : x
  2. Step 2: Convert to fraction form
    1,218.38/1,827.63 = 352.76/x
  3. Step 3: Cross multiply
    1,218.38x = 1,827.63 × 352.76
  4. Step 4: Simplify right side
    1,218.38x = 644,705.62
  5. Step 5: Solve for x
    x = 644,705.62/1,218.38
  6. Step 6: Final answer
    x = 529.15

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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.