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Finding the Fourth Proportional to 802.46, 1,203.18 and 314.94

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Solution

The fourth proportional to 802.46, 1,203.18 and 314.94 is: 472.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.46 : 1,203.18 = 314.94 : x
  2. Step 2: Convert to fraction form
    802.46/1,203.18 = 314.94/x
  3. Step 3: Cross multiply
    802.46x = 1,203.18 × 314.94
  4. Step 4: Simplify right side
    802.46x = 378,929.51
  5. Step 5: Solve for x
    x = 378,929.51/802.46
  6. Step 6: Final answer
    x = 472.21

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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.