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Finding the Fourth Proportional to 876.11, 1,208.88 and 592.65

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Solution

The fourth proportional to 876.11, 1,208.88 and 592.65 is: 817.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    876.11 : 1,208.88 = 592.65 : x
  2. Step 2: Convert to fraction form
    876.11/1,208.88 = 592.65/x
  3. Step 3: Cross multiply
    876.11x = 1,208.88 × 592.65
  4. Step 4: Simplify right side
    876.11x = 716,441.07
  5. Step 5: Solve for x
    x = 716,441.07/876.11
  6. Step 6: Final answer
    x = 817.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.