Home / 1,047.20-1,570.59-353.70

Finding the Fourth Proportional to 1,047.20, 1,570.59 and 353.70

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Solution

The fourth proportional to 1,047.20, 1,570.59 and 353.70 is: 530.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047.20 : 1,570.59 = 353.70 : x
  2. Step 2: Convert to fraction form
    1,047.20/1,570.59 = 353.70/x
  3. Step 3: Cross multiply
    1,047.20x = 1,570.59 × 353.70
  4. Step 4: Simplify right side
    1,047.20x = 555,517.68
  5. Step 5: Solve for x
    x = 555,517.68/1,047.20
  6. Step 6: Final answer
    x = 530.48

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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.