Home / 1,148.20-1,722.75-417.83

Finding the Fourth Proportional to 1,148.20, 1,722.75 and 417.83

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Solution

The fourth proportional to 1,148.20, 1,722.75 and 417.83 is: 626.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.20 : 1,722.75 = 417.83 : x
  2. Step 2: Convert to fraction form
    1,148.20/1,722.75 = 417.83/x
  3. Step 3: Cross multiply
    1,148.20x = 1,722.75 × 417.83
  4. Step 4: Simplify right side
    1,148.20x = 719,816.63
  5. Step 5: Solve for x
    x = 719,816.63/1,148.20
  6. Step 6: Final answer
    x = 626.91

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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.