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Finding the Fourth Proportional to 926.49, 1,388.52 and 536.70

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Solution

The fourth proportional to 926.49, 1,388.52 and 536.70 is: 804.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    926.49 : 1,388.52 = 536.70 : x
  2. Step 2: Convert to fraction form
    926.49/1,388.52 = 536.70/x
  3. Step 3: Cross multiply
    926.49x = 1,388.52 × 536.70
  4. Step 4: Simplify right side
    926.49x = 745,218.68
  5. Step 5: Solve for x
    x = 745,218.68/926.49
  6. Step 6: Final answer
    x = 804.35

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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.