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Finding the Fourth Proportional to 802.13, 1,106.63 and 470.43

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Solution

The fourth proportional to 802.13, 1,106.63 and 470.43 is: 649.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.13 : 1,106.63 = 470.43 : x
  2. Step 2: Convert to fraction form
    802.13/1,106.63 = 470.43/x
  3. Step 3: Cross multiply
    802.13x = 1,106.63 × 470.43
  4. Step 4: Simplify right side
    802.13x = 520,591.36
  5. Step 5: Solve for x
    x = 520,591.36/802.13
  6. Step 6: Final answer
    x = 649.02

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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.