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Finding the Fourth Proportional to 307.27, 460.90 and 145.07

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Solution

The fourth proportional to 307.27, 460.90 and 145.07 is: 217.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.27 : 460.90 = 145.07 : x
  2. Step 2: Convert to fraction form
    307.27/460.90 = 145.07/x
  3. Step 3: Cross multiply
    307.27x = 460.90 × 145.07
  4. Step 4: Simplify right side
    307.27x = 66,862.76
  5. Step 5: Solve for x
    x = 66,862.76/307.27
  6. Step 6: Final answer
    x = 217.60

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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.