Home / 1,214.93-1,822.68-393.20

Finding the Fourth Proportional to 1,214.93, 1,822.68 and 393.20

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Solution

The fourth proportional to 1,214.93, 1,822.68 and 393.20 is: 589.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.93 : 1,822.68 = 393.20 : x
  2. Step 2: Convert to fraction form
    1,214.93/1,822.68 = 393.20/x
  3. Step 3: Cross multiply
    1,214.93x = 1,822.68 × 393.20
  4. Step 4: Simplify right side
    1,214.93x = 716,675.22
  5. Step 5: Solve for x
    x = 716,675.22/1,214.93
  6. Step 6: Final answer
    x = 589.89

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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.