Home / 1,263.50-1,895.29-430.56

Finding the Fourth Proportional to 1,263.50, 1,895.29 and 430.56

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Solution

The fourth proportional to 1,263.50, 1,895.29 and 430.56 is: 645.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263.50 : 1,895.29 = 430.56 : x
  2. Step 2: Convert to fraction form
    1,263.50/1,895.29 = 430.56/x
  3. Step 3: Cross multiply
    1,263.50x = 1,895.29 × 430.56
  4. Step 4: Simplify right side
    1,263.50x = 816,036.06
  5. Step 5: Solve for x
    x = 816,036.06/1,263.50
  6. Step 6: Final answer
    x = 645.85

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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.