Home / 1,336.18-2,003.48-458.38

Finding the Fourth Proportional to 1,336.18, 2,003.48 and 458.38

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Solution

The fourth proportional to 1,336.18, 2,003.48 and 458.38 is: 687.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336.18 : 2,003.48 = 458.38 : x
  2. Step 2: Convert to fraction form
    1,336.18/2,003.48 = 458.38/x
  3. Step 3: Cross multiply
    1,336.18x = 2,003.48 × 458.38
  4. Step 4: Simplify right side
    1,336.18x = 918,355.16
  5. Step 5: Solve for x
    x = 918,355.16/1,336.18
  6. Step 6: Final answer
    x = 687.30

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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.