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Finding the Fourth Proportional to 612.17, 918.56 and 304.01

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Solution

The fourth proportional to 612.17, 918.56 and 304.01 is: 456.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.17 : 918.56 = 304.01 : x
  2. Step 2: Convert to fraction form
    612.17/918.56 = 304.01/x
  3. Step 3: Cross multiply
    612.17x = 918.56 × 304.01
  4. Step 4: Simplify right side
    612.17x = 279,251.43
  5. Step 5: Solve for x
    x = 279,251.43/612.17
  6. Step 6: Final answer
    x = 456.17

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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.