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Finding the Fourth Proportional to 535.36, 802.59 and 206.20

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Solution

The fourth proportional to 535.36, 802.59 and 206.20 is: 309.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.36 : 802.59 = 206.20 : x
  2. Step 2: Convert to fraction form
    535.36/802.59 = 206.20/x
  3. Step 3: Cross multiply
    535.36x = 802.59 × 206.20
  4. Step 4: Simplify right side
    535.36x = 165,494.06
  5. Step 5: Solve for x
    x = 165,494.06/535.36
  6. Step 6: Final answer
    x = 309.13

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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.