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Finding the Fourth Proportional to 612, 917.90 and 246.70

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Solution

The fourth proportional to 612, 917.90 and 246.70 is: 370.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    612 : 917.90 = 246.70 : x
  2. Step 2: Convert to fraction form
    612/917.90 = 246.70/x
  3. Step 3: Cross multiply
    612x = 917.90 × 246.70
  4. Step 4: Simplify right side
    612x = 226,445.93
  5. Step 5: Solve for x
    x = 226,445.93/612
  6. Step 6: Final answer
    x = 370.01

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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.