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Finding the Fourth Proportional to 720.98, 995.10 and 458.94

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Solution

The fourth proportional to 720.98, 995.10 and 458.94 is: 633.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    720.98 : 995.10 = 458.94 : x
  2. Step 2: Convert to fraction form
    720.98/995.10 = 458.94/x
  3. Step 3: Cross multiply
    720.98x = 995.10 × 458.94
  4. Step 4: Simplify right side
    720.98x = 456,691.19
  5. Step 5: Solve for x
    x = 456,691.19/720.98
  6. Step 6: Final answer
    x = 633.43

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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.