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Finding the Fourth Proportional to 720.13, 992.55 and 595.39

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Solution

The fourth proportional to 720.13, 992.55 and 595.39 is: 820.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    720.13 : 992.55 = 595.39 : x
  2. Step 2: Convert to fraction form
    720.13/992.55 = 595.39/x
  3. Step 3: Cross multiply
    720.13x = 992.55 × 595.39
  4. Step 4: Simplify right side
    720.13x = 590,954.34
  5. Step 5: Solve for x
    x = 590,954.34/720.13
  6. Step 6: Final answer
    x = 820.62

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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.