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Finding the Fourth Proportional to 518.15, 777.32 and 152.96

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Solution

The fourth proportional to 518.15, 777.32 and 152.96 is: 229.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.15 : 777.32 = 152.96 : x
  2. Step 2: Convert to fraction form
    518.15/777.32 = 152.96/x
  3. Step 3: Cross multiply
    518.15x = 777.32 × 152.96
  4. Step 4: Simplify right side
    518.15x = 118,898.10
  5. Step 5: Solve for x
    x = 118,898.10/518.15
  6. Step 6: Final answer
    x = 229.47

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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.