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Finding the Fourth Proportional to 509.07, 702.44 and 299.19

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Solution

The fourth proportional to 509.07, 702.44 and 299.19 is: 412.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.07 : 702.44 = 299.19 : x
  2. Step 2: Convert to fraction form
    509.07/702.44 = 299.19/x
  3. Step 3: Cross multiply
    509.07x = 702.44 × 299.19
  4. Step 4: Simplify right side
    509.07x = 210,161.53
  5. Step 5: Solve for x
    x = 210,161.53/509.07
  6. Step 6: Final answer
    x = 412.83

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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.