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Finding the Fourth Proportional to 1,041.52, 1,563.56 and 486.76

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Solution

The fourth proportional to 1,041.52, 1,563.56 and 486.76 is: 730.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,041.52 : 1,563.56 = 486.76 : x
  2. Step 2: Convert to fraction form
    1,041.52/1,563.56 = 486.76/x
  3. Step 3: Cross multiply
    1,041.52x = 1,563.56 × 486.76
  4. Step 4: Simplify right side
    1,041.52x = 761,078.47
  5. Step 5: Solve for x
    x = 761,078.47/1,041.52
  6. Step 6: Final answer
    x = 730.74

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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.