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Finding the Fourth Proportional to 610.90, 916.74 and 226.16

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Solution

The fourth proportional to 610.90, 916.74 and 226.16 is: 339.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.90 : 916.74 = 226.16 : x
  2. Step 2: Convert to fraction form
    610.90/916.74 = 226.16/x
  3. Step 3: Cross multiply
    610.90x = 916.74 × 226.16
  4. Step 4: Simplify right side
    610.90x = 207,329.92
  5. Step 5: Solve for x
    x = 207,329.92/610.90
  6. Step 6: Final answer
    x = 339.38

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1.5x scale

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.