Home / 1,053.88-1,579.56-436.80

Finding the Fourth Proportional to 1,053.88, 1,579.56 and 436.80

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Solution

The fourth proportional to 1,053.88, 1,579.56 and 436.80 is: 654.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.88 : 1,579.56 = 436.80 : x
  2. Step 2: Convert to fraction form
    1,053.88/1,579.56 = 436.80/x
  3. Step 3: Cross multiply
    1,053.88x = 1,579.56 × 436.80
  4. Step 4: Simplify right side
    1,053.88x = 689,951.81
  5. Step 5: Solve for x
    x = 689,951.81/1,053.88
  6. Step 6: Final answer
    x = 654.68

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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.