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Finding the Fourth Proportional to 309.36, 463.60 and 155.32

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Solution

The fourth proportional to 309.36, 463.60 and 155.32 is: 232.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    309.36 : 463.60 = 155.32 : x
  2. Step 2: Convert to fraction form
    309.36/463.60 = 155.32/x
  3. Step 3: Cross multiply
    309.36x = 463.60 × 155.32
  4. Step 4: Simplify right side
    309.36x = 72,006.35
  5. Step 5: Solve for x
    x = 72,006.35/309.36
  6. Step 6: Final answer
    x = 232.76

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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.