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Finding the Fourth Proportional to 735.57, 1,015.07 and 403.99

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Solution

The fourth proportional to 735.57, 1,015.07 and 403.99 is: 557.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.57 : 1,015.07 = 403.99 : x
  2. Step 2: Convert to fraction form
    735.57/1,015.07 = 403.99/x
  3. Step 3: Cross multiply
    735.57x = 1,015.07 × 403.99
  4. Step 4: Simplify right side
    735.57x = 410,073.57
  5. Step 5: Solve for x
    x = 410,073.57/735.57
  6. Step 6: Final answer
    x = 557.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.