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Finding the Fourth Proportional to 508.72, 702.84 and 425.56

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Solution

The fourth proportional to 508.72, 702.84 and 425.56 is: 587.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.72 : 702.84 = 425.56 : x
  2. Step 2: Convert to fraction form
    508.72/702.84 = 425.56/x
  3. Step 3: Cross multiply
    508.72x = 702.84 × 425.56
  4. Step 4: Simplify right side
    508.72x = 299,100.59
  5. Step 5: Solve for x
    x = 299,100.59/508.72
  6. Step 6: Final answer
    x = 587.95

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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.