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Finding the Fourth Proportional to 517.06, 776.40 and 354.66

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Solution

The fourth proportional to 517.06, 776.40 and 354.66 is: 532.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.06 : 776.40 = 354.66 : x
  2. Step 2: Convert to fraction form
    517.06/776.40 = 354.66/x
  3. Step 3: Cross multiply
    517.06x = 776.40 × 354.66
  4. Step 4: Simplify right side
    517.06x = 275,358.02
  5. Step 5: Solve for x
    x = 275,358.02/517.06
  6. Step 6: Final answer
    x = 532.55

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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.