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Finding the Fourth Proportional to 720.02, 993.06 and 483.89

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Solution

The fourth proportional to 720.02, 993.06 and 483.89 is: 667.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    720.02 : 993.06 = 483.89 : x
  2. Step 2: Convert to fraction form
    720.02/993.06 = 483.89/x
  3. Step 3: Cross multiply
    720.02x = 993.06 × 483.89
  4. Step 4: Simplify right side
    720.02x = 480,531.80
  5. Step 5: Solve for x
    x = 480,531.80/720.02
  6. Step 6: Final answer
    x = 667.39

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Double scale
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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.