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Finding the Fourth Proportional to 802.82, 1,203.60 and 340.22

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Solution

The fourth proportional to 802.82, 1,203.60 and 340.22 is: 510.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.82 : 1,203.60 = 340.22 : x
  2. Step 2: Convert to fraction form
    802.82/1,203.60 = 340.22/x
  3. Step 3: Cross multiply
    802.82x = 1,203.60 × 340.22
  4. Step 4: Simplify right side
    802.82x = 409,488.79
  5. Step 5: Solve for x
    x = 409,488.79/802.82
  6. Step 6: Final answer
    x = 510.06

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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.