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Finding the Fourth Proportional to 1,208.47, 1,812.88 and 592.21

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Solution

The fourth proportional to 1,208.47, 1,812.88 and 592.21 is: 888.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208.47 : 1,812.88 = 592.21 : x
  2. Step 2: Convert to fraction form
    1,208.47/1,812.88 = 592.21/x
  3. Step 3: Cross multiply
    1,208.47x = 1,812.88 × 592.21
  4. Step 4: Simplify right side
    1,208.47x = 1,073,608.67
  5. Step 5: Solve for x
    x = 1,073,608.67/1,208.47
  6. Step 6: Final answer
    x = 888.40

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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.