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Finding the Fourth Proportional to 935.26, 1,403 and 387.37

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Solution

The fourth proportional to 935.26, 1,403 and 387.37 is: 581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.26 : 1,403 = 387.37 : x
  2. Step 2: Convert to fraction form
    935.26/1,403 = 387.37/x
  3. Step 3: Cross multiply
    935.26x = 1,403 × 387.37
  4. Step 4: Simplify right side
    935.26x = 543,480.11
  5. Step 5: Solve for x
    x = 543,480.11/935.26
  6. Step 6: Final answer
    x = 581.10

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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.