Home / 753.03-1,129.62-291.20

Finding the Fourth Proportional to 753.03, 1,129.62 and 291.20

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Solution

The fourth proportional to 753.03, 1,129.62 and 291.20 is: 436.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    753.03 : 1,129.62 = 291.20 : x
  2. Step 2: Convert to fraction form
    753.03/1,129.62 = 291.20/x
  3. Step 3: Cross multiply
    753.03x = 1,129.62 × 291.20
  4. Step 4: Simplify right side
    753.03x = 328,939.70
  5. Step 5: Solve for x
    x = 328,939.70/753.03
  6. Step 6: Final answer
    x = 436.82

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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.