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Finding the Fourth Proportional to 340.63, 469.53 and 222.39

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Solution

The fourth proportional to 340.63, 469.53 and 222.39 is: 306.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.63 : 469.53 = 222.39 : x
  2. Step 2: Convert to fraction form
    340.63/469.53 = 222.39/x
  3. Step 3: Cross multiply
    340.63x = 469.53 × 222.39
  4. Step 4: Simplify right side
    340.63x = 104,417.66
  5. Step 5: Solve for x
    x = 104,417.66/340.63
  6. Step 6: Final answer
    x = 306.55

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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.