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Finding the Fourth Proportional to 720.83, 994.52 and 554.75

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Solution

The fourth proportional to 720.83, 994.52 and 554.75 is: 765.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    720.83 : 994.52 = 554.75 : x
  2. Step 2: Convert to fraction form
    720.83/994.52 = 554.75/x
  3. Step 3: Cross multiply
    720.83x = 994.52 × 554.75
  4. Step 4: Simplify right side
    720.83x = 551,710.11
  5. Step 5: Solve for x
    x = 551,710.11/720.83
  6. Step 6: Final answer
    x = 765.38

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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.