Home / 1,299.21-1,947.65-477.29

Finding the Fourth Proportional to 1,299.21, 1,947.65 and 477.29

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Solution

The fourth proportional to 1,299.21, 1,947.65 and 477.29 is: 715.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299.21 : 1,947.65 = 477.29 : x
  2. Step 2: Convert to fraction form
    1,299.21/1,947.65 = 477.29/x
  3. Step 3: Cross multiply
    1,299.21x = 1,947.65 × 477.29
  4. Step 4: Simplify right side
    1,299.21x = 929,581.74
  5. Step 5: Solve for x
    x = 929,581.74/1,299.21
  6. Step 6: Final answer
    x = 715.50

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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.