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Finding the Fourth Proportional to 377.32, 565.18 and 319.28

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Solution

The fourth proportional to 377.32, 565.18 and 319.28 is: 478.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.32 : 565.18 = 319.28 : x
  2. Step 2: Convert to fraction form
    377.32/565.18 = 319.28/x
  3. Step 3: Cross multiply
    377.32x = 565.18 × 319.28
  4. Step 4: Simplify right side
    377.32x = 180,450.67
  5. Step 5: Solve for x
    x = 180,450.67/377.32
  6. Step 6: Final answer
    x = 478.24

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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.