Home / 1,206.24-1,809.40-384.56

Finding the Fourth Proportional to 1,206.24, 1,809.40 and 384.56

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Solution

The fourth proportional to 1,206.24, 1,809.40 and 384.56 is: 576.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206.24 : 1,809.40 = 384.56 : x
  2. Step 2: Convert to fraction form
    1,206.24/1,809.40 = 384.56/x
  3. Step 3: Cross multiply
    1,206.24x = 1,809.40 × 384.56
  4. Step 4: Simplify right side
    1,206.24x = 695,822.86
  5. Step 5: Solve for x
    x = 695,822.86/1,206.24
  6. Step 6: Final answer
    x = 576.85

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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.