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Finding the Fourth Proportional to 720.36, 994.57 and 554.27

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Solution

The fourth proportional to 720.36, 994.57 and 554.27 is: 765.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    720.36 : 994.57 = 554.27 : x
  2. Step 2: Convert to fraction form
    720.36/994.57 = 554.27/x
  3. Step 3: Cross multiply
    720.36x = 994.57 × 554.27
  4. Step 4: Simplify right side
    720.36x = 551,260.31
  5. Step 5: Solve for x
    x = 551,260.31/720.36
  6. Step 6: Final answer
    x = 765.26

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1.5x scale

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.