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Finding the Fourth Proportional to 935.03, 1,402.54 and 285.76

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Solution

The fourth proportional to 935.03, 1,402.54 and 285.76 is: 428.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.03 : 1,402.54 = 285.76 : x
  2. Step 2: Convert to fraction form
    935.03/1,402.54 = 285.76/x
  3. Step 3: Cross multiply
    935.03x = 1,402.54 × 285.76
  4. Step 4: Simplify right side
    935.03x = 400,787.22
  5. Step 5: Solve for x
    x = 400,787.22/935.03
  6. Step 6: Final answer
    x = 428.64

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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.