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Finding the Fourth Proportional to 780.94, 1,077.24 and 594.10

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Solution

The fourth proportional to 780.94, 1,077.24 and 594.10 is: 819.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    780.94 : 1,077.24 = 594.10 : x
  2. Step 2: Convert to fraction form
    780.94/1,077.24 = 594.10/x
  3. Step 3: Cross multiply
    780.94x = 1,077.24 × 594.10
  4. Step 4: Simplify right side
    780.94x = 639,988.28
  5. Step 5: Solve for x
    x = 639,988.28/780.94
  6. Step 6: Final answer
    x = 819.51

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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.