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Finding the Fourth Proportional to 802.80, 1,202.04 and 477.36

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Solution

The fourth proportional to 802.80, 1,202.04 and 477.36 is: 714.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.80 : 1,202.04 = 477.36 : x
  2. Step 2: Convert to fraction form
    802.80/1,202.04 = 477.36/x
  3. Step 3: Cross multiply
    802.80x = 1,202.04 × 477.36
  4. Step 4: Simplify right side
    802.80x = 573,805.81
  5. Step 5: Solve for x
    x = 573,805.81/802.80
  6. Step 6: Final answer
    x = 714.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.