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Finding the Fourth Proportional to 565.34, 848.79 and 391.57

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Solution

The fourth proportional to 565.34, 848.79 and 391.57 is: 587.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.34 : 848.79 = 391.57 : x
  2. Step 2: Convert to fraction form
    565.34/848.79 = 391.57/x
  3. Step 3: Cross multiply
    565.34x = 848.79 × 391.57
  4. Step 4: Simplify right side
    565.34x = 332,358.58
  5. Step 5: Solve for x
    x = 332,358.58/565.34
  6. Step 6: Final answer
    x = 587.90

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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.