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Finding the Fourth Proportional to 956.84, 1,435.26 and 307.88

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Solution

The fourth proportional to 956.84, 1,435.26 and 307.88 is: 461.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.84 : 1,435.26 = 307.88 : x
  2. Step 2: Convert to fraction form
    956.84/1,435.26 = 307.88/x
  3. Step 3: Cross multiply
    956.84x = 1,435.26 × 307.88
  4. Step 4: Simplify right side
    956.84x = 441,887.85
  5. Step 5: Solve for x
    x = 441,887.85/956.84
  6. Step 6: Final answer
    x = 461.82

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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.