Home / 1,282.49-1,923.78-358.11

Finding the Fourth Proportional to 1,282.49, 1,923.78 and 358.11

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Solution

The fourth proportional to 1,282.49, 1,923.78 and 358.11 is: 537.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282.49 : 1,923.78 = 358.11 : x
  2. Step 2: Convert to fraction form
    1,282.49/1,923.78 = 358.11/x
  3. Step 3: Cross multiply
    1,282.49x = 1,923.78 × 358.11
  4. Step 4: Simplify right side
    1,282.49x = 688,924.86
  5. Step 5: Solve for x
    x = 688,924.86/1,282.49
  6. Step 6: Final answer
    x = 537.18

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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.