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Finding the Fourth Proportional to 802.37, 1,202.72 and 339.76

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Solution

The fourth proportional to 802.37, 1,202.72 and 339.76 is: 509.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.37 : 1,202.72 = 339.76 : x
  2. Step 2: Convert to fraction form
    802.37/1,202.72 = 339.76/x
  3. Step 3: Cross multiply
    802.37x = 1,202.72 × 339.76
  4. Step 4: Simplify right side
    802.37x = 408,636.15
  5. Step 5: Solve for x
    x = 408,636.15/802.37
  6. Step 6: Final answer
    x = 509.29

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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.