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Finding the Fourth Proportional to 529.14, 793.76 and 139.14

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Solution

The fourth proportional to 529.14, 793.76 and 139.14 is: 208.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.14 : 793.76 = 139.14 : x
  2. Step 2: Convert to fraction form
    529.14/793.76 = 139.14/x
  3. Step 3: Cross multiply
    529.14x = 793.76 × 139.14
  4. Step 4: Simplify right side
    529.14x = 110,443.77
  5. Step 5: Solve for x
    x = 110,443.77/529.14
  6. Step 6: Final answer
    x = 208.72

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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.