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Finding the Fourth Proportional to 891.77, 1,230.90 and 593.06

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Solution

The fourth proportional to 891.77, 1,230.90 and 593.06 is: 818.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    891.77 : 1,230.90 = 593.06 : x
  2. Step 2: Convert to fraction form
    891.77/1,230.90 = 593.06/x
  3. Step 3: Cross multiply
    891.77x = 1,230.90 × 593.06
  4. Step 4: Simplify right side
    891.77x = 729,997.55
  5. Step 5: Solve for x
    x = 729,997.55/891.77
  6. Step 6: Final answer
    x = 818.59

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Double scale
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1.5x scale

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.