Home / 1,355.16-2,029.68-623.64

Finding the Fourth Proportional to 1,355.16, 2,029.68 and 623.64

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Solution

The fourth proportional to 1,355.16, 2,029.68 and 623.64 is: 934.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.16 : 2,029.68 = 623.64 : x
  2. Step 2: Convert to fraction form
    1,355.16/2,029.68 = 623.64/x
  3. Step 3: Cross multiply
    1,355.16x = 2,029.68 × 623.64
  4. Step 4: Simplify right side
    1,355.16x = 1,265,789.64
  5. Step 5: Solve for x
    x = 1,265,789.64/1,355.16
  6. Step 6: Final answer
    x = 934.05

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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.