Home / 1,036.48-1,555.20-459.28

Finding the Fourth Proportional to 1,036.48, 1,555.20 and 459.28

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Solution

The fourth proportional to 1,036.48, 1,555.20 and 459.28 is: 689.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.48 : 1,555.20 = 459.28 : x
  2. Step 2: Convert to fraction form
    1,036.48/1,555.20 = 459.28/x
  3. Step 3: Cross multiply
    1,036.48x = 1,555.20 × 459.28
  4. Step 4: Simplify right side
    1,036.48x = 714,272.26
  5. Step 5: Solve for x
    x = 714,272.26/1,036.48
  6. Step 6: Final answer
    x = 689.13

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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.