Home / 1,153.30-1,729.95-331.57

Finding the Fourth Proportional to 1,153.30, 1,729.95 and 331.57

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Solution

The fourth proportional to 1,153.30, 1,729.95 and 331.57 is: 497.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153.30 : 1,729.95 = 331.57 : x
  2. Step 2: Convert to fraction form
    1,153.30/1,729.95 = 331.57/x
  3. Step 3: Cross multiply
    1,153.30x = 1,729.95 × 331.57
  4. Step 4: Simplify right side
    1,153.30x = 573,606.79
  5. Step 5: Solve for x
    x = 573,606.79/1,153.30
  6. Step 6: Final answer
    x = 497.36

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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.