Home / 1,357.35-2,036.28-480.11

Finding the Fourth Proportional to 1,357.35, 2,036.28 and 480.11

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Solution

The fourth proportional to 1,357.35, 2,036.28 and 480.11 is: 720.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357.35 : 2,036.28 = 480.11 : x
  2. Step 2: Convert to fraction form
    1,357.35/2,036.28 = 480.11/x
  3. Step 3: Cross multiply
    1,357.35x = 2,036.28 × 480.11
  4. Step 4: Simplify right side
    1,357.35x = 977,638.39
  5. Step 5: Solve for x
    x = 977,638.39/1,357.35
  6. Step 6: Final answer
    x = 720.26

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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.