Home / 1,296.23-1,943.72-430.25

Finding the Fourth Proportional to 1,296.23, 1,943.72 and 430.25

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Solution

The fourth proportional to 1,296.23, 1,943.72 and 430.25 is: 645.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.23 : 1,943.72 = 430.25 : x
  2. Step 2: Convert to fraction form
    1,296.23/1,943.72 = 430.25/x
  3. Step 3: Cross multiply
    1,296.23x = 1,943.72 × 430.25
  4. Step 4: Simplify right side
    1,296.23x = 836,283.38
  5. Step 5: Solve for x
    x = 836,283.38/1,296.23
  6. Step 6: Final answer
    x = 645.17

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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.