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Finding the Fourth Proportional to 572.98, 859.46 and 207.80

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Solution

The fourth proportional to 572.98, 859.46 and 207.80 is: 311.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.98 : 859.46 = 207.80 : x
  2. Step 2: Convert to fraction form
    572.98/859.46 = 207.80/x
  3. Step 3: Cross multiply
    572.98x = 859.46 × 207.80
  4. Step 4: Simplify right side
    572.98x = 178,595.79
  5. Step 5: Solve for x
    x = 178,595.79/572.98
  6. Step 6: Final answer
    x = 311.70

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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.