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Finding the Fourth Proportional to 935.27, 1,402.36 and 318.77

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Solution

The fourth proportional to 935.27, 1,402.36 and 318.77 is: 477.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.27 : 1,402.36 = 318.77 : x
  2. Step 2: Convert to fraction form
    935.27/1,402.36 = 318.77/x
  3. Step 3: Cross multiply
    935.27x = 1,402.36 × 318.77
  4. Step 4: Simplify right side
    935.27x = 447,030.30
  5. Step 5: Solve for x
    x = 447,030.30/935.27
  6. Step 6: Final answer
    x = 477.97

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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.