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Finding the Fourth Proportional to 565.53, 846.92 and 391.70

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Solution

The fourth proportional to 565.53, 846.92 and 391.70 is: 586.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.53 : 846.92 = 391.70 : x
  2. Step 2: Convert to fraction form
    565.53/846.92 = 391.70/x
  3. Step 3: Cross multiply
    565.53x = 846.92 × 391.70
  4. Step 4: Simplify right side
    565.53x = 331,741.66
  5. Step 5: Solve for x
    x = 331,741.66/565.53
  6. Step 6: Final answer
    x = 586.60

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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.