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Finding the Fourth Proportional to 340.54, 510.81 and 178.11

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Solution

The fourth proportional to 340.54, 510.81 and 178.11 is: 267.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.54 : 510.81 = 178.11 : x
  2. Step 2: Convert to fraction form
    340.54/510.81 = 178.11/x
  3. Step 3: Cross multiply
    340.54x = 510.81 × 178.11
  4. Step 4: Simplify right side
    340.54x = 90,979.70
  5. Step 5: Solve for x
    x = 90,979.70/340.54
  6. Step 6: Final answer
    x = 267.17

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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.