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Finding the Fourth Proportional to 624.80, 862.18 and 344.93

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Solution

The fourth proportional to 624.80, 862.18 and 344.93 is: 475.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.80 : 862.18 = 344.93 : x
  2. Step 2: Convert to fraction form
    624.80/862.18 = 344.93/x
  3. Step 3: Cross multiply
    624.80x = 862.18 × 344.93
  4. Step 4: Simplify right side
    624.80x = 297,390.89
  5. Step 5: Solve for x
    x = 297,390.89/624.80
  6. Step 6: Final answer
    x = 475.98

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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.