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Finding the Fourth Proportional to 1,430.80, 2,146.37 and 506.32

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Solution

The fourth proportional to 1,430.80, 2,146.37 and 506.32 is: 759.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.80 : 2,146.37 = 506.32 : x
  2. Step 2: Convert to fraction form
    1,430.80/2,146.37 = 506.32/x
  3. Step 3: Cross multiply
    1,430.80x = 2,146.37 × 506.32
  4. Step 4: Simplify right side
    1,430.80x = 1,086,742.16
  5. Step 5: Solve for x
    x = 1,086,742.16/1,430.80
  6. Step 6: Final answer
    x = 759.54

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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.