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Finding the Fourth Proportional to 935.88, 1,403.47 and 372.85

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Solution

The fourth proportional to 935.88, 1,403.47 and 372.85 is: 559.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.88 : 1,403.47 = 372.85 : x
  2. Step 2: Convert to fraction form
    935.88/1,403.47 = 372.85/x
  3. Step 3: Cross multiply
    935.88x = 1,403.47 × 372.85
  4. Step 4: Simplify right side
    935.88x = 523,276.77
  5. Step 5: Solve for x
    x = 523,276.77/935.88
  6. Step 6: Final answer
    x = 559.13

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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.