Home / 953.04-1,428.96-432.80

Finding the Fourth Proportional to 953.04, 1,428.96 and 432.80

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Solution

The fourth proportional to 953.04, 1,428.96 and 432.80 is: 648.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.04 : 1,428.96 = 432.80 : x
  2. Step 2: Convert to fraction form
    953.04/1,428.96 = 432.80/x
  3. Step 3: Cross multiply
    953.04x = 1,428.96 × 432.80
  4. Step 4: Simplify right side
    953.04x = 618,453.89
  5. Step 5: Solve for x
    x = 618,453.89/953.04
  6. Step 6: Final answer
    x = 648.93

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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.