Home / 1,342.18-2,012.42-417.48

Finding the Fourth Proportional to 1,342.18, 2,012.42 and 417.48

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Solution

The fourth proportional to 1,342.18, 2,012.42 and 417.48 is: 625.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.18 : 2,012.42 = 417.48 : x
  2. Step 2: Convert to fraction form
    1,342.18/2,012.42 = 417.48/x
  3. Step 3: Cross multiply
    1,342.18x = 2,012.42 × 417.48
  4. Step 4: Simplify right side
    1,342.18x = 840,145.10
  5. Step 5: Solve for x
    x = 840,145.10/1,342.18
  6. Step 6: Final answer
    x = 625.96

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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.