Home / 1,282.19-1,923.29-308.30

Finding the Fourth Proportional to 1,282.19, 1,923.29 and 308.30

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Solution

The fourth proportional to 1,282.19, 1,923.29 and 308.30 is: 462.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282.19 : 1,923.29 = 308.30 : x
  2. Step 2: Convert to fraction form
    1,282.19/1,923.29 = 308.30/x
  3. Step 3: Cross multiply
    1,282.19x = 1,923.29 × 308.30
  4. Step 4: Simplify right side
    1,282.19x = 592,941.46
  5. Step 5: Solve for x
    x = 592,941.46/1,282.19
  6. Step 6: Final answer
    x = 462.44

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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.