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Finding the Fourth Proportional to 616, 848.40 and 572.96

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Solution

The fourth proportional to 616, 848.40 and 572.96 is: 789.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    616 : 848.40 = 572.96 : x
  2. Step 2: Convert to fraction form
    616/848.40 = 572.96/x
  3. Step 3: Cross multiply
    616x = 848.40 × 572.96
  4. Step 4: Simplify right side
    616x = 486,099.26
  5. Step 5: Solve for x
    x = 486,099.26/616
  6. Step 6: Final answer
    x = 789.12

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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.