Home / 1,036.28-1,555.22-459.16

Finding the Fourth Proportional to 1,036.28, 1,555.22 and 459.16

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Solution

The fourth proportional to 1,036.28, 1,555.22 and 459.16 is: 689.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.28 : 1,555.22 = 459.16 : x
  2. Step 2: Convert to fraction form
    1,036.28/1,555.22 = 459.16/x
  3. Step 3: Cross multiply
    1,036.28x = 1,555.22 × 459.16
  4. Step 4: Simplify right side
    1,036.28x = 714,094.82
  5. Step 5: Solve for x
    x = 714,094.82/1,036.28
  6. Step 6: Final answer
    x = 689.09

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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.