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Finding the Fourth Proportional to 570.81, 789.80 and 497.29

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Solution

The fourth proportional to 570.81, 789.80 and 497.29 is: 688.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.81 : 789.80 = 497.29 : x
  2. Step 2: Convert to fraction form
    570.81/789.80 = 497.29/x
  3. Step 3: Cross multiply
    570.81x = 789.80 × 497.29
  4. Step 4: Simplify right side
    570.81x = 392,755.39
  5. Step 5: Solve for x
    x = 392,755.39/570.81
  6. Step 6: Final answer
    x = 688.06

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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.