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Finding the Fourth Proportional to 780.84, 1,167.74 and 595.80

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Solution

The fourth proportional to 780.84, 1,167.74 and 595.80 is: 891.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    780.84 : 1,167.74 = 595.80 : x
  2. Step 2: Convert to fraction form
    780.84/1,167.74 = 595.80/x
  3. Step 3: Cross multiply
    780.84x = 1,167.74 × 595.80
  4. Step 4: Simplify right side
    780.84x = 695,744.24
  5. Step 5: Solve for x
    x = 695,744.24/780.84
  6. Step 6: Final answer
    x = 891.02

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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.