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Finding the Fourth Proportional to 535.15, 802.86 and 210.52

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Solution

The fourth proportional to 535.15, 802.86 and 210.52 is: 315.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.15 : 802.86 = 210.52 : x
  2. Step 2: Convert to fraction form
    535.15/802.86 = 210.52/x
  3. Step 3: Cross multiply
    535.15x = 802.86 × 210.52
  4. Step 4: Simplify right side
    535.15x = 169,018.09
  5. Step 5: Solve for x
    x = 169,018.09/535.15
  6. Step 6: Final answer
    x = 315.83

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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.