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Finding the Fourth Proportional to 956.06, 1,319.41 and 719.58

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Solution

The fourth proportional to 956.06, 1,319.41 and 719.58 is: 993.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.06 : 1,319.41 = 719.58 : x
  2. Step 2: Convert to fraction form
    956.06/1,319.41 = 719.58/x
  3. Step 3: Cross multiply
    956.06x = 1,319.41 × 719.58
  4. Step 4: Simplify right side
    956.06x = 949,414.45
  5. Step 5: Solve for x
    x = 949,414.45/956.06
  6. Step 6: Final answer
    x = 993.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.