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Finding the Fourth Proportional to 508.78, 763.17 and 124.03

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Solution

The fourth proportional to 508.78, 763.17 and 124.03 is: 186.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.78 : 763.17 = 124.03 : x
  2. Step 2: Convert to fraction form
    508.78/763.17 = 124.03/x
  3. Step 3: Cross multiply
    508.78x = 763.17 × 124.03
  4. Step 4: Simplify right side
    508.78x = 94,657.16
  5. Step 5: Solve for x
    x = 94,657.16/508.78
  6. Step 6: Final answer
    x = 186.05

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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.