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Finding the Fourth Proportional to 955.17, 1,432.89 and 305.69

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Solution

The fourth proportional to 955.17, 1,432.89 and 305.69 is: 458.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.17 : 1,432.89 = 305.69 : x
  2. Step 2: Convert to fraction form
    955.17/1,432.89 = 305.69/x
  3. Step 3: Cross multiply
    955.17x = 1,432.89 × 305.69
  4. Step 4: Simplify right side
    955.17x = 438,012.98
  5. Step 5: Solve for x
    x = 438,012.98/955.17
  6. Step 6: Final answer
    x = 458.57

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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.