Home / 1,310.01-1,965.30-432.78

Finding the Fourth Proportional to 1,310.01, 1,965.30 and 432.78

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Solution

The fourth proportional to 1,310.01, 1,965.30 and 432.78 is: 649.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310.01 : 1,965.30 = 432.78 : x
  2. Step 2: Convert to fraction form
    1,310.01/1,965.30 = 432.78/x
  3. Step 3: Cross multiply
    1,310.01x = 1,965.30 × 432.78
  4. Step 4: Simplify right side
    1,310.01x = 850,542.53
  5. Step 5: Solve for x
    x = 850,542.53/1,310.01
  6. Step 6: Final answer
    x = 649.26

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1.5x scale

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.