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Finding the Fourth Proportional to 572.71, 859.38 and 531.40

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Solution

The fourth proportional to 572.71, 859.38 and 531.40 is: 797.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.71 : 859.38 = 531.40 : x
  2. Step 2: Convert to fraction form
    572.71/859.38 = 531.40/x
  3. Step 3: Cross multiply
    572.71x = 859.38 × 531.40
  4. Step 4: Simplify right side
    572.71x = 456,674.53
  5. Step 5: Solve for x
    x = 456,674.53/572.71
  6. Step 6: Final answer
    x = 797.39

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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.