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Finding the Fourth Proportional to 508.23, 763.16 and 425.88

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Solution

The fourth proportional to 508.23, 763.16 and 425.88 is: 639.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.23 : 763.16 = 425.88 : x
  2. Step 2: Convert to fraction form
    508.23/763.16 = 425.88/x
  3. Step 3: Cross multiply
    508.23x = 763.16 × 425.88
  4. Step 4: Simplify right side
    508.23x = 325,012.45
  5. Step 5: Solve for x
    x = 325,012.45/508.23
  6. Step 6: Final answer
    x = 639.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.