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Finding the Fourth Proportional to 1,296.70, 1,943.13 and 953.02

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Solution

The fourth proportional to 1,296.70, 1,943.13 and 953.02 is: 1,428.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.70 : 1,943.13 = 953.02 : x
  2. Step 2: Convert to fraction form
    1,296.70/1,943.13 = 953.02/x
  3. Step 3: Cross multiply
    1,296.70x = 1,943.13 × 953.02
  4. Step 4: Simplify right side
    1,296.70x = 1,851,841.75
  5. Step 5: Solve for x
    x = 1,851,841.75/1,296.70
  6. Step 6: Final answer
    x = 1,428.12

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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.