Home / 1,148.60-1,721.75-455.00

Finding the Fourth Proportional to 1,148.60, 1,721.75 and 455.00

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Solution

The fourth proportional to 1,148.60, 1,721.75 and 455.00 is: 682.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.60 : 1,721.75 = 455.00 : x
  2. Step 2: Convert to fraction form
    1,148.60/1,721.75 = 455.00/x
  3. Step 3: Cross multiply
    1,148.60x = 1,721.75 × 455.00
  4. Step 4: Simplify right side
    1,148.60x = 783,385.37
  5. Step 5: Solve for x
    x = 783,385.37/1,148.60
  6. Step 6: Final answer
    x = 682.03

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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.