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Finding the Fourth Proportional to 612.53, 918.61 and 201.58

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Solution

The fourth proportional to 612.53, 918.61 and 201.58 is: 302.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.53 : 918.61 = 201.58 : x
  2. Step 2: Convert to fraction form
    612.53/918.61 = 201.58/x
  3. Step 3: Cross multiply
    612.53x = 918.61 × 201.58
  4. Step 4: Simplify right side
    612.53x = 185,167.80
  5. Step 5: Solve for x
    x = 185,167.80/612.53
  6. Step 6: Final answer
    x = 302.30

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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.