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Finding the Fourth Proportional to 1,357.43, 2,035.22 and 535.28

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Solution

The fourth proportional to 1,357.43, 2,035.22 and 535.28 is: 802.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357.43 : 2,035.22 = 535.28 : x
  2. Step 2: Convert to fraction form
    1,357.43/2,035.22 = 535.28/x
  3. Step 3: Cross multiply
    1,357.43x = 2,035.22 × 535.28
  4. Step 4: Simplify right side
    1,357.43x = 1,089,412.56
  5. Step 5: Solve for x
    x = 1,089,412.56/1,357.43
  6. Step 6: Final answer
    x = 802.56

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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.