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Finding the Fourth Proportional to 152.71, 210.78 and 94.54

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Solution

The fourth proportional to 152.71, 210.78 and 94.54 is: 130.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.71 : 210.78 = 94.54 : x
  2. Step 2: Convert to fraction form
    152.71/210.78 = 94.54/x
  3. Step 3: Cross multiply
    152.71x = 210.78 × 94.54
  4. Step 4: Simplify right side
    152.71x = 19,927.14
  5. Step 5: Solve for x
    x = 19,927.14/152.71
  6. Step 6: Final answer
    x = 130.49

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.