Home / 1,296.61-1,943.70-430.31

Finding the Fourth Proportional to 1,296.61, 1,943.70 and 430.31

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Solution

The fourth proportional to 1,296.61, 1,943.70 and 430.31 is: 645.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.61 : 1,943.70 = 430.31 : x
  2. Step 2: Convert to fraction form
    1,296.61/1,943.70 = 430.31/x
  3. Step 3: Cross multiply
    1,296.61x = 1,943.70 × 430.31
  4. Step 4: Simplify right side
    1,296.61x = 836,396.79
  5. Step 5: Solve for x
    x = 836,396.79/1,296.61
  6. Step 6: Final answer
    x = 645.07

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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.