Home / 1,445.40-2,168.19-471.51

Finding the Fourth Proportional to 1,445.40, 2,168.19 and 471.51

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Solution

The fourth proportional to 1,445.40, 2,168.19 and 471.51 is: 707.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.40 : 2,168.19 = 471.51 : x
  2. Step 2: Convert to fraction form
    1,445.40/2,168.19 = 471.51/x
  3. Step 3: Cross multiply
    1,445.40x = 2,168.19 × 471.51
  4. Step 4: Simplify right side
    1,445.40x = 1,022,323.27
  5. Step 5: Solve for x
    x = 1,022,323.27/1,445.40
  6. Step 6: Final answer
    x = 707.29

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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.