Home / 1,290.60-1,935.89-468.87

Finding the Fourth Proportional to 1,290.60, 1,935.89 and 468.87

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Solution

The fourth proportional to 1,290.60, 1,935.89 and 468.87 is: 703.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290.60 : 1,935.89 = 468.87 : x
  2. Step 2: Convert to fraction form
    1,290.60/1,935.89 = 468.87/x
  3. Step 3: Cross multiply
    1,290.60x = 1,935.89 × 468.87
  4. Step 4: Simplify right side
    1,290.60x = 907,680.74
  5. Step 5: Solve for x
    x = 907,680.74/1,290.60
  6. Step 6: Final answer
    x = 703.30

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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.