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Finding the Fourth Proportional to 147.51, 222.51 and 141.15

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Solution

The fourth proportional to 147.51, 222.51 and 141.15 is: 212.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.51 : 222.51 = 141.15 : x
  2. Step 2: Convert to fraction form
    147.51/222.51 = 141.15/x
  3. Step 3: Cross multiply
    147.51x = 222.51 × 141.15
  4. Step 4: Simplify right side
    147.51x = 31,407.29
  5. Step 5: Solve for x
    x = 31,407.29/147.51
  6. Step 6: Final answer
    x = 212.92

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.