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Finding the Fourth Proportional to 157.14, 216.95 and 104.76

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Solution

The fourth proportional to 157.14, 216.95 and 104.76 is: 144.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    157.14 : 216.95 = 104.76 : x
  2. Step 2: Convert to fraction form
    157.14/216.95 = 104.76/x
  3. Step 3: Cross multiply
    157.14x = 216.95 × 104.76
  4. Step 4: Simplify right side
    157.14x = 22,727.16
  5. Step 5: Solve for x
    x = 22,727.16/157.14
  6. Step 6: Final answer
    x = 144.63

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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.