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Finding the Fourth Proportional to 955.03, 1,431.61 and 493.33

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Solution

The fourth proportional to 955.03, 1,431.61 and 493.33 is: 739.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.03 : 1,431.61 = 493.33 : x
  2. Step 2: Convert to fraction form
    955.03/1,431.61 = 493.33/x
  3. Step 3: Cross multiply
    955.03x = 1,431.61 × 493.33
  4. Step 4: Simplify right side
    955.03x = 706,256.16
  5. Step 5: Solve for x
    x = 706,256.16/955.03
  6. Step 6: Final answer
    x = 739.51

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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.