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Finding the Fourth Proportional to 854.55, 1,179.77 and 589.38

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Solution

The fourth proportional to 854.55, 1,179.77 and 589.38 is: 813.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    854.55 : 1,179.77 = 589.38 : x
  2. Step 2: Convert to fraction form
    854.55/1,179.77 = 589.38/x
  3. Step 3: Cross multiply
    854.55x = 1,179.77 × 589.38
  4. Step 4: Simplify right side
    854.55x = 695,325.47
  5. Step 5: Solve for x
    x = 695,325.47/854.55
  6. Step 6: Final answer
    x = 813.67

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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.