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Finding the Fourth Proportional to 517.80, 776.68 and 152.59

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Solution

The fourth proportional to 517.80, 776.68 and 152.59 is: 228.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.80 : 776.68 = 152.59 : x
  2. Step 2: Convert to fraction form
    517.80/776.68 = 152.59/x
  3. Step 3: Cross multiply
    517.80x = 776.68 × 152.59
  4. Step 4: Simplify right side
    517.80x = 118,513.60
  5. Step 5: Solve for x
    x = 118,513.60/517.80
  6. Step 6: Final answer
    x = 228.88

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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.