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Finding the Fourth Proportional to 1,580.42, 2,370.02 and 759.08

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Solution

The fourth proportional to 1,580.42, 2,370.02 and 759.08 is: 1,138.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.42 : 2,370.02 = 759.08 : x
  2. Step 2: Convert to fraction form
    1,580.42/2,370.02 = 759.08/x
  3. Step 3: Cross multiply
    1,580.42x = 2,370.02 × 759.08
  4. Step 4: Simplify right side
    1,580.42x = 1,799,019.14
  5. Step 5: Solve for x
    x = 1,799,019.14/1,580.42
  6. Step 6: Final answer
    x = 1,138.32

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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.