Home / 1,451.37-2,178.29-630.30

Finding the Fourth Proportional to 1,451.37, 2,178.29 and 630.30

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Solution

The fourth proportional to 1,451.37, 2,178.29 and 630.30 is: 945.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.37 : 2,178.29 = 630.30 : x
  2. Step 2: Convert to fraction form
    1,451.37/2,178.29 = 630.30/x
  3. Step 3: Cross multiply
    1,451.37x = 2,178.29 × 630.30
  4. Step 4: Simplify right side
    1,451.37x = 1,372,962.14
  5. Step 5: Solve for x
    x = 1,372,962.14/1,451.37
  6. Step 6: Final answer
    x = 945.98

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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.