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Finding the Fourth Proportional to 572.89, 859.56 and 207.72

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Solution

The fourth proportional to 572.89, 859.56 and 207.72 is: 311.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.89 : 859.56 = 207.72 : x
  2. Step 2: Convert to fraction form
    572.89/859.56 = 207.72/x
  3. Step 3: Cross multiply
    572.89x = 859.56 × 207.72
  4. Step 4: Simplify right side
    572.89x = 178,547.80
  5. Step 5: Solve for x
    x = 178,547.80/572.89
  6. Step 6: Final answer
    x = 311.66

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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.