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Finding the Fourth Proportional to 1,041.04, 1,561.36 and 492.72

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Solution

The fourth proportional to 1,041.04, 1,561.36 and 492.72 is: 738.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,041.04 : 1,561.36 = 492.72 : x
  2. Step 2: Convert to fraction form
    1,041.04/1,561.36 = 492.72/x
  3. Step 3: Cross multiply
    1,041.04x = 1,561.36 × 492.72
  4. Step 4: Simplify right side
    1,041.04x = 769,313.30
  5. Step 5: Solve for x
    x = 769,313.30/1,041.04
  6. Step 6: Final answer
    x = 738.99

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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.