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Finding the Fourth Proportional to 514.04, 709.30 and 307

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Solution

The fourth proportional to 514.04, 709.30 and 307 is: 423.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.04 : 709.30 = 307 : x
  2. Step 2: Convert to fraction form
    514.04/709.30 = 307/x
  3. Step 3: Cross multiply
    514.04x = 709.30 × 307
  4. Step 4: Simplify right side
    514.04x = 217,755.10
  5. Step 5: Solve for x
    x = 217,755.10/514.04
  6. Step 6: Final answer
    x = 423.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.