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Finding the Fourth Proportional to 802.41, 1,107.18 and 470.85

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Solution

The fourth proportional to 802.41, 1,107.18 and 470.85 is: 649.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.41 : 1,107.18 = 470.85 : x
  2. Step 2: Convert to fraction form
    802.41/1,107.18 = 470.85/x
  3. Step 3: Cross multiply
    802.41x = 1,107.18 × 470.85
  4. Step 4: Simplify right side
    802.41x = 521,315.70
  5. Step 5: Solve for x
    x = 521,315.70/802.41
  6. Step 6: Final answer
    x = 649.69

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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.