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Finding the Fourth Proportional to 555.39, 766.06 and 358.85

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Solution

The fourth proportional to 555.39, 766.06 and 358.85 is: 494.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.39 : 766.06 = 358.85 : x
  2. Step 2: Convert to fraction form
    555.39/766.06 = 358.85/x
  3. Step 3: Cross multiply
    555.39x = 766.06 × 358.85
  4. Step 4: Simplify right side
    555.39x = 274,901.65
  5. Step 5: Solve for x
    x = 274,901.65/555.39
  6. Step 6: Final answer
    x = 494.97

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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.