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Finding the Fourth Proportional to 950.13, 1,425.14 and 256.80

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Solution

The fourth proportional to 950.13, 1,425.14 and 256.80 is: 385.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.13 : 1,425.14 = 256.80 : x
  2. Step 2: Convert to fraction form
    950.13/1,425.14 = 256.80/x
  3. Step 3: Cross multiply
    950.13x = 1,425.14 × 256.80
  4. Step 4: Simplify right side
    950.13x = 365,970.40
  5. Step 5: Solve for x
    x = 365,970.40/950.13
  6. Step 6: Final answer
    x = 385.18

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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.