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Finding the Fourth Proportional to 926.49, 1,390.53 and 482.04

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Solution

The fourth proportional to 926.49, 1,390.53 and 482.04 is: 723.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    926.49 : 1,390.53 = 482.04 : x
  2. Step 2: Convert to fraction form
    926.49/1,390.53 = 482.04/x
  3. Step 3: Cross multiply
    926.49x = 1,390.53 × 482.04
  4. Step 4: Simplify right side
    926.49x = 670,291.08
  5. Step 5: Solve for x
    x = 670,291.08/926.49
  6. Step 6: Final answer
    x = 723.47

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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.