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Finding the Fourth Proportional to 307.57, 461.36 and 238.93

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Solution

The fourth proportional to 307.57, 461.36 and 238.93 is: 358.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.57 : 461.36 = 238.93 : x
  2. Step 2: Convert to fraction form
    307.57/461.36 = 238.93/x
  3. Step 3: Cross multiply
    307.57x = 461.36 × 238.93
  4. Step 4: Simplify right side
    307.57x = 110,232.74
  5. Step 5: Solve for x
    x = 110,232.74/307.57
  6. Step 6: Final answer
    x = 358.40

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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.