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Finding the Fourth Proportional to 975.82, 1,346.62 and 602.62

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Solution

The fourth proportional to 975.82, 1,346.62 and 602.62 is: 831.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.82 : 1,346.62 = 602.62 : x
  2. Step 2: Convert to fraction form
    975.82/1,346.62 = 602.62/x
  3. Step 3: Cross multiply
    975.82x = 1,346.62 × 602.62
  4. Step 4: Simplify right side
    975.82x = 811,500.14
  5. Step 5: Solve for x
    x = 811,500.14/975.82
  6. Step 6: Final answer
    x = 831.61

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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.