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Finding the Fourth Proportional to 1,517.29, 2,276 and 530.21

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Solution

The fourth proportional to 1,517.29, 2,276 and 530.21 is: 795.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.29 : 2,276 = 530.21 : x
  2. Step 2: Convert to fraction form
    1,517.29/2,276 = 530.21/x
  3. Step 3: Cross multiply
    1,517.29x = 2,276 × 530.21
  4. Step 4: Simplify right side
    1,517.29x = 1,206,757.96
  5. Step 5: Solve for x
    x = 1,206,757.96/1,517.29
  6. Step 6: Final answer
    x = 795.34

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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.