Home / 1,430.46-2,145.92-456.35

Finding the Fourth Proportional to 1,430.46, 2,145.92 and 456.35

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Solution

The fourth proportional to 1,430.46, 2,145.92 and 456.35 is: 684.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.46 : 2,145.92 = 456.35 : x
  2. Step 2: Convert to fraction form
    1,430.46/2,145.92 = 456.35/x
  3. Step 3: Cross multiply
    1,430.46x = 2,145.92 × 456.35
  4. Step 4: Simplify right side
    1,430.46x = 979,277.58
  5. Step 5: Solve for x
    x = 979,277.58/1,430.46
  6. Step 6: Final answer
    x = 684.59

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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.