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Finding the Fourth Proportional to 377.70, 565.74 and 215.16

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Solution

The fourth proportional to 377.70, 565.74 and 215.16 is: 322.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.70 : 565.74 = 215.16 : x
  2. Step 2: Convert to fraction form
    377.70/565.74 = 215.16/x
  3. Step 3: Cross multiply
    377.70x = 565.74 × 215.16
  4. Step 4: Simplify right side
    377.70x = 121,724.62
  5. Step 5: Solve for x
    x = 121,724.62/377.70
  6. Step 6: Final answer
    x = 322.28

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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.