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Finding the Fourth Proportional to 975.91, 1,346.93 and 582.86

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Solution

The fourth proportional to 975.91, 1,346.93 and 582.86 is: 804.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.91 : 1,346.93 = 582.86 : x
  2. Step 2: Convert to fraction form
    975.91/1,346.93 = 582.86/x
  3. Step 3: Cross multiply
    975.91x = 1,346.93 × 582.86
  4. Step 4: Simplify right side
    975.91x = 785,071.62
  5. Step 5: Solve for x
    x = 785,071.62/975.91
  6. Step 6: Final answer
    x = 804.45

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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.