Home / 1,264.60-1,896.90-340.30

Finding the Fourth Proportional to 1,264.60, 1,896.90 and 340.30

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Solution

The fourth proportional to 1,264.60, 1,896.90 and 340.30 is: 510.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.60 : 1,896.90 = 340.30 : x
  2. Step 2: Convert to fraction form
    1,264.60/1,896.90 = 340.30/x
  3. Step 3: Cross multiply
    1,264.60x = 1,896.90 × 340.30
  4. Step 4: Simplify right side
    1,264.60x = 645,515.07
  5. Step 5: Solve for x
    x = 645,515.07/1,264.60
  6. Step 6: Final answer
    x = 510.45

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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.