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Finding the Fourth Proportional to 340.74, 511.03 and 97.20

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Solution

The fourth proportional to 340.74, 511.03 and 97.20 is: 145.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.74 : 511.03 = 97.20 : x
  2. Step 2: Convert to fraction form
    340.74/511.03 = 97.20/x
  3. Step 3: Cross multiply
    340.74x = 511.03 × 97.20
  4. Step 4: Simplify right side
    340.74x = 49,669.56
  5. Step 5: Solve for x
    x = 49,669.56/340.74
  6. Step 6: Final answer
    x = 145.77

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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.