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Finding the Fourth Proportional to 975.97, 1,465.08 and 771.22

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Solution

The fourth proportional to 975.97, 1,465.08 and 771.22 is: 1,157.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.97 : 1,465.08 = 771.22 : x
  2. Step 2: Convert to fraction form
    975.97/1,465.08 = 771.22/x
  3. Step 3: Cross multiply
    975.97x = 1,465.08 × 771.22
  4. Step 4: Simplify right side
    975.97x = 1,129,899.00
  5. Step 5: Solve for x
    x = 1,129,899.00/975.97
  6. Step 6: Final answer
    x = 1,157.72

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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.