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Finding the Fourth Proportional to 353.30, 530.06 and 170.70

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Solution

The fourth proportional to 353.30, 530.06 and 170.70 is: 256.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.30 : 530.06 = 170.70 : x
  2. Step 2: Convert to fraction form
    353.30/530.06 = 170.70/x
  3. Step 3: Cross multiply
    353.30x = 530.06 × 170.70
  4. Step 4: Simplify right side
    353.30x = 90,481.24
  5. Step 5: Solve for x
    x = 90,481.24/353.30
  6. Step 6: Final answer
    x = 256.10

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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.