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Finding the Fourth Proportional to 509.70, 703.13 and 323.14

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Solution

The fourth proportional to 509.70, 703.13 and 323.14 is: 445.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.70 : 703.13 = 323.14 : x
  2. Step 2: Convert to fraction form
    509.70/703.13 = 323.14/x
  3. Step 3: Cross multiply
    509.70x = 703.13 × 323.14
  4. Step 4: Simplify right side
    509.70x = 227,209.43
  5. Step 5: Solve for x
    x = 227,209.43/509.70
  6. Step 6: Final answer
    x = 445.77

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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.