Home / 1,295.30-1,943.25-429.61

Finding the Fourth Proportional to 1,295.30, 1,943.25 and 429.61

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Solution

The fourth proportional to 1,295.30, 1,943.25 and 429.61 is: 644.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295.30 : 1,943.25 = 429.61 : x
  2. Step 2: Convert to fraction form
    1,295.30/1,943.25 = 429.61/x
  3. Step 3: Cross multiply
    1,295.30x = 1,943.25 × 429.61
  4. Step 4: Simplify right side
    1,295.30x = 834,839.63
  5. Step 5: Solve for x
    x = 834,839.63/1,295.30
  6. Step 6: Final answer
    x = 644.51

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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.