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Finding the Fourth Proportional to 555.32, 766.86 and 348.68

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Solution

The fourth proportional to 555.32, 766.86 and 348.68 is: 481.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.32 : 766.86 = 348.68 : x
  2. Step 2: Convert to fraction form
    555.32/766.86 = 348.68/x
  3. Step 3: Cross multiply
    555.32x = 766.86 × 348.68
  4. Step 4: Simplify right side
    555.32x = 267,388.74
  5. Step 5: Solve for x
    x = 267,388.74/555.32
  6. Step 6: Final answer
    x = 481.50

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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.