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Finding the Fourth Proportional to 536.13, 802.47 and 485.61

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Solution

The fourth proportional to 536.13, 802.47 and 485.61 is: 726.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.13 : 802.47 = 485.61 : x
  2. Step 2: Convert to fraction form
    536.13/802.47 = 485.61/x
  3. Step 3: Cross multiply
    536.13x = 802.47 × 485.61
  4. Step 4: Simplify right side
    536.13x = 389,687.46
  5. Step 5: Solve for x
    x = 389,687.46/536.13
  6. Step 6: Final answer
    x = 726.85

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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.