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Finding the Fourth Proportional to 345.10, 518.48 and 332.79

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Solution

The fourth proportional to 345.10, 518.48 and 332.79 is: 499.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.10 : 518.48 = 332.79 : x
  2. Step 2: Convert to fraction form
    345.10/518.48 = 332.79/x
  3. Step 3: Cross multiply
    345.10x = 518.48 × 332.79
  4. Step 4: Simplify right side
    345.10x = 172,543.30
  5. Step 5: Solve for x
    x = 172,543.30/345.10
  6. Step 6: Final answer
    x = 499.98

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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.