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Finding the Fourth Proportional to 508.85, 702.27 and 351.43

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Solution

The fourth proportional to 508.85, 702.27 and 351.43 is: 485.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.85 : 702.27 = 351.43 : x
  2. Step 2: Convert to fraction form
    508.85/702.27 = 351.43/x
  3. Step 3: Cross multiply
    508.85x = 702.27 × 351.43
  4. Step 4: Simplify right side
    508.85x = 246,798.75
  5. Step 5: Solve for x
    x = 246,798.75/508.85
  6. Step 6: Final answer
    x = 485.01

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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.