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Finding the Fourth Proportional to 612.54, 914.33 and 539.64

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Solution

The fourth proportional to 612.54, 914.33 and 539.64 is: 805.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.54 : 914.33 = 539.64 : x
  2. Step 2: Convert to fraction form
    612.54/914.33 = 539.64/x
  3. Step 3: Cross multiply
    612.54x = 914.33 × 539.64
  4. Step 4: Simplify right side
    612.54x = 493,406.34
  5. Step 5: Solve for x
    x = 493,406.34/612.54
  6. Step 6: Final answer
    x = 805.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.