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Finding the Fourth Proportional to 340.45, 469.81 and 193.08

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Solution

The fourth proportional to 340.45, 469.81 and 193.08 is: 266.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.45 : 469.81 = 193.08 : x
  2. Step 2: Convert to fraction form
    340.45/469.81 = 193.08/x
  3. Step 3: Cross multiply
    340.45x = 469.81 × 193.08
  4. Step 4: Simplify right side
    340.45x = 90,710.91
  5. Step 5: Solve for x
    x = 90,710.91/340.45
  6. Step 6: Final answer
    x = 266.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.