Home / 1,218.32-1,827.70-352.68

Finding the Fourth Proportional to 1,218.32, 1,827.70 and 352.68

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Solution

The fourth proportional to 1,218.32, 1,827.70 and 352.68 is: 529.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.32 : 1,827.70 = 352.68 : x
  2. Step 2: Convert to fraction form
    1,218.32/1,827.70 = 352.68/x
  3. Step 3: Cross multiply
    1,218.32x = 1,827.70 × 352.68
  4. Step 4: Simplify right side
    1,218.32x = 644,593.24
  5. Step 5: Solve for x
    x = 644,593.24/1,218.32
  6. Step 6: Final answer
    x = 529.08

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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.