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Finding the Fourth Proportional to 802.05, 1,202.90 and 368.79

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Solution

The fourth proportional to 802.05, 1,202.90 and 368.79 is: 553.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.05 : 1,202.90 = 368.79 : x
  2. Step 2: Convert to fraction form
    802.05/1,202.90 = 368.79/x
  3. Step 3: Cross multiply
    802.05x = 1,202.90 × 368.79
  4. Step 4: Simplify right side
    802.05x = 443,615.65
  5. Step 5: Solve for x
    x = 443,615.65/802.05
  6. Step 6: Final answer
    x = 553.10

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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.