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Finding the Fourth Proportional to 152.93, 210.96 and 103.79

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Solution

The fourth proportional to 152.93, 210.96 and 103.79 is: 143.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.93 : 210.96 = 103.79 : x
  2. Step 2: Convert to fraction form
    152.93/210.96 = 103.79/x
  3. Step 3: Cross multiply
    152.93x = 210.96 × 103.79
  4. Step 4: Simplify right side
    152.93x = 21,894.48
  5. Step 5: Solve for x
    x = 21,894.48/152.93
  6. Step 6: Final answer
    x = 143.17

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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.