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Finding the Fourth Proportional to 955.12, 1,432.44 and 407.02

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Solution

The fourth proportional to 955.12, 1,432.44 and 407.02 is: 610.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.12 : 1,432.44 = 407.02 : x
  2. Step 2: Convert to fraction form
    955.12/1,432.44 = 407.02/x
  3. Step 3: Cross multiply
    955.12x = 1,432.44 × 407.02
  4. Step 4: Simplify right side
    955.12x = 583,031.73
  5. Step 5: Solve for x
    x = 583,031.73/955.12
  6. Step 6: Final answer
    x = 610.43

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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.