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Finding the Fourth Proportional to 935.28, 1,403.84 and 503.36

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Solution

The fourth proportional to 935.28, 1,403.84 and 503.36 is: 755.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.28 : 1,403.84 = 503.36 : x
  2. Step 2: Convert to fraction form
    935.28/1,403.84 = 503.36/x
  3. Step 3: Cross multiply
    935.28x = 1,403.84 × 503.36
  4. Step 4: Simplify right side
    935.28x = 706,636.90
  5. Step 5: Solve for x
    x = 706,636.90/935.28
  6. Step 6: Final answer
    x = 755.54

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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.