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Finding the Fourth Proportional to 720.52, 993.14 and 554.47

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Solution

The fourth proportional to 720.52, 993.14 and 554.47 is: 764.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    720.52 : 993.14 = 554.47 : x
  2. Step 2: Convert to fraction form
    720.52/993.14 = 554.47/x
  3. Step 3: Cross multiply
    720.52x = 993.14 × 554.47
  4. Step 4: Simplify right side
    720.52x = 550,663.56
  5. Step 5: Solve for x
    x = 550,663.56/720.52
  6. Step 6: Final answer
    x = 764.26

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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.