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Finding the Fourth Proportional to 723.15, 998.18 and 536.58

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Solution

The fourth proportional to 723.15, 998.18 and 536.58 is: 740.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.15 : 998.18 = 536.58 : x
  2. Step 2: Convert to fraction form
    723.15/998.18 = 536.58/x
  3. Step 3: Cross multiply
    723.15x = 998.18 × 536.58
  4. Step 4: Simplify right side
    723.15x = 535,603.42
  5. Step 5: Solve for x
    x = 535,603.42/723.15
  6. Step 6: Final answer
    x = 740.65

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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.