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Finding the Fourth Proportional to 508.91, 702.36 and 299.16

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Solution

The fourth proportional to 508.91, 702.36 and 299.16 is: 412.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.91 : 702.36 = 299.16 : x
  2. Step 2: Convert to fraction form
    508.91/702.36 = 299.16/x
  3. Step 3: Cross multiply
    508.91x = 702.36 × 299.16
  4. Step 4: Simplify right side
    508.91x = 210,118.02
  5. Step 5: Solve for x
    x = 210,118.02/508.91
  6. Step 6: Final answer
    x = 412.88

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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.