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Finding the Fourth Proportional to 345.40, 518.27 and 150.34

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Solution

The fourth proportional to 345.40, 518.27 and 150.34 is: 225.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.40 : 518.27 = 150.34 : x
  2. Step 2: Convert to fraction form
    345.40/518.27 = 150.34/x
  3. Step 3: Cross multiply
    345.40x = 518.27 × 150.34
  4. Step 4: Simplify right side
    345.40x = 77,916.71
  5. Step 5: Solve for x
    x = 77,916.71/345.40
  6. Step 6: Final answer
    x = 225.58

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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.