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Finding the Fourth Proportional to 956.07, 1,434.11 and 262.72

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Solution

The fourth proportional to 956.07, 1,434.11 and 262.72 is: 394.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.07 : 1,434.11 = 262.72 : x
  2. Step 2: Convert to fraction form
    956.07/1,434.11 = 262.72/x
  3. Step 3: Cross multiply
    956.07x = 1,434.11 × 262.72
  4. Step 4: Simplify right side
    956.07x = 376,769.38
  5. Step 5: Solve for x
    x = 376,769.38/956.07
  6. Step 6: Final answer
    x = 394.08

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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.