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Finding the Fourth Proportional to 535.31, 802.10 and 274.95

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Solution

The fourth proportional to 535.31, 802.10 and 274.95 is: 411.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.31 : 802.10 = 274.95 : x
  2. Step 2: Convert to fraction form
    535.31/802.10 = 274.95/x
  3. Step 3: Cross multiply
    535.31x = 802.10 × 274.95
  4. Step 4: Simplify right side
    535.31x = 220,536.79
  5. Step 5: Solve for x
    x = 220,536.79/535.31
  6. Step 6: Final answer
    x = 411.98

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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.