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Finding the Fourth Proportional to 612.80, 917.28 and 597.44

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Solution

The fourth proportional to 612.80, 917.28 and 597.44 is: 894.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.80 : 917.28 = 597.44 : x
  2. Step 2: Convert to fraction form
    612.80/917.28 = 597.44/x
  3. Step 3: Cross multiply
    612.80x = 917.28 × 597.44
  4. Step 4: Simplify right side
    612.80x = 548,019.76
  5. Step 5: Solve for x
    x = 548,019.76/612.80
  6. Step 6: Final answer
    x = 894.29

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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.