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Finding the Fourth Proportional to 955.85, 1,434.54 and 371.13

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Solution

The fourth proportional to 955.85, 1,434.54 and 371.13 is: 557.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.85 : 1,434.54 = 371.13 : x
  2. Step 2: Convert to fraction form
    955.85/1,434.54 = 371.13/x
  3. Step 3: Cross multiply
    955.85x = 1,434.54 × 371.13
  4. Step 4: Simplify right side
    955.85x = 532,404.91
  5. Step 5: Solve for x
    x = 532,404.91/955.85
  6. Step 6: Final answer
    x = 557.00

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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.