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Finding the Fourth Proportional to 1,041.67, 1,561.96 and 493.71

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Solution

The fourth proportional to 1,041.67, 1,561.96 and 493.71 is: 740.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,041.67 : 1,561.96 = 493.71 : x
  2. Step 2: Convert to fraction form
    1,041.67/1,561.96 = 493.71/x
  3. Step 3: Cross multiply
    1,041.67x = 1,561.96 × 493.71
  4. Step 4: Simplify right side
    1,041.67x = 771,155.27
  5. Step 5: Solve for x
    x = 771,155.27/1,041.67
  6. Step 6: Final answer
    x = 740.31

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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.