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Finding the Fourth Proportional to 572.63, 858.99 and 207.42

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Solution

The fourth proportional to 572.63, 858.99 and 207.42 is: 311.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.63 : 858.99 = 207.42 : x
  2. Step 2: Convert to fraction form
    572.63/858.99 = 207.42/x
  3. Step 3: Cross multiply
    572.63x = 858.99 × 207.42
  4. Step 4: Simplify right side
    572.63x = 178,170.67
  5. Step 5: Solve for x
    x = 178,170.67/572.63
  6. Step 6: Final answer
    x = 311.14

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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.