Home / 1,053.24-1,579.80-436.68

Finding the Fourth Proportional to 1,053.24, 1,579.80 and 436.68

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Solution

The fourth proportional to 1,053.24, 1,579.80 and 436.68 is: 655.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.24 : 1,579.80 = 436.68 : x
  2. Step 2: Convert to fraction form
    1,053.24/1,579.80 = 436.68/x
  3. Step 3: Cross multiply
    1,053.24x = 1,579.80 × 436.68
  4. Step 4: Simplify right side
    1,053.24x = 689,867.06
  5. Step 5: Solve for x
    x = 689,867.06/1,053.24
  6. Step 6: Final answer
    x = 655.00

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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.