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Finding the Fourth Proportional to 612.17, 918.25 and 179.32

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Solution

The fourth proportional to 612.17, 918.25 and 179.32 is: 268.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.17 : 918.25 = 179.32 : x
  2. Step 2: Convert to fraction form
    612.17/918.25 = 179.32/x
  3. Step 3: Cross multiply
    612.17x = 918.25 × 179.32
  4. Step 4: Simplify right side
    612.17x = 164,660.59
  5. Step 5: Solve for x
    x = 164,660.59/612.17
  6. Step 6: Final answer
    x = 268.98

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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.