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Finding the Fourth Proportional to 1,539.65, 2,309.58 and 552.66

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Solution

The fourth proportional to 1,539.65, 2,309.58 and 552.66 is: 829.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.65 : 2,309.58 = 552.66 : x
  2. Step 2: Convert to fraction form
    1,539.65/2,309.58 = 552.66/x
  3. Step 3: Cross multiply
    1,539.65x = 2,309.58 × 552.66
  4. Step 4: Simplify right side
    1,539.65x = 1,276,412.48
  5. Step 5: Solve for x
    x = 1,276,412.48/1,539.65
  6. Step 6: Final answer
    x = 829.03

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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.