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Finding the Fourth Proportional to 956.10, 1,434.18 and 262.74

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Solution

The fourth proportional to 956.10, 1,434.18 and 262.74 is: 394.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.10 : 1,434.18 = 262.74 : x
  2. Step 2: Convert to fraction form
    956.10/1,434.18 = 262.74/x
  3. Step 3: Cross multiply
    956.10x = 1,434.18 × 262.74
  4. Step 4: Simplify right side
    956.10x = 376,816.45
  5. Step 5: Solve for x
    x = 376,816.45/956.10
  6. Step 6: Final answer
    x = 394.12

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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.