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Finding the Fourth Proportional to 152.32, 210.23 and 130.11

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Solution

The fourth proportional to 152.32, 210.23 and 130.11 is: 179.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.32 : 210.23 = 130.11 : x
  2. Step 2: Convert to fraction form
    152.32/210.23 = 130.11/x
  3. Step 3: Cross multiply
    152.32x = 210.23 × 130.11
  4. Step 4: Simplify right side
    152.32x = 27,351.32
  5. Step 5: Solve for x
    x = 27,351.32/152.32
  6. Step 6: Final answer
    x = 179.57

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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.