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Finding the Fourth Proportional to 613.12, 918.47 and 536.17

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Solution

The fourth proportional to 613.12, 918.47 and 536.17 is: 803.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.12 : 918.47 = 536.17 : x
  2. Step 2: Convert to fraction form
    613.12/918.47 = 536.17/x
  3. Step 3: Cross multiply
    613.12x = 918.47 × 536.17
  4. Step 4: Simplify right side
    613.12x = 492,456.06
  5. Step 5: Solve for x
    x = 492,456.06/613.12
  6. Step 6: Final answer
    x = 803.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.