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Finding the Fourth Proportional to 804.12, 1,108.16 and 582.68

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Solution

The fourth proportional to 804.12, 1,108.16 and 582.68 is: 802.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.12 : 1,108.16 = 582.68 : x
  2. Step 2: Convert to fraction form
    804.12/1,108.16 = 582.68/x
  3. Step 3: Cross multiply
    804.12x = 1,108.16 × 582.68
  4. Step 4: Simplify right side
    804.12x = 645,702.67
  5. Step 5: Solve for x
    x = 645,702.67/804.12
  6. Step 6: Final answer
    x = 802.99

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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.