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Finding the Fourth Proportional to 152.08, 228.24 and 130.72

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Solution

The fourth proportional to 152.08, 228.24 and 130.72 is: 196.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.08 : 228.24 = 130.72 : x
  2. Step 2: Convert to fraction form
    152.08/228.24 = 130.72/x
  3. Step 3: Cross multiply
    152.08x = 228.24 × 130.72
  4. Step 4: Simplify right side
    152.08x = 29,835.53
  5. Step 5: Solve for x
    x = 29,835.53/152.08
  6. Step 6: Final answer
    x = 196.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.