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Finding the Fourth Proportional to 377.90, 567.16 and 256.40

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Solution

The fourth proportional to 377.90, 567.16 and 256.40 is: 384.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.90 : 567.16 = 256.40 : x
  2. Step 2: Convert to fraction form
    377.90/567.16 = 256.40/x
  3. Step 3: Cross multiply
    377.90x = 567.16 × 256.40
  4. Step 4: Simplify right side
    377.90x = 145,419.82
  5. Step 5: Solve for x
    x = 145,419.82/377.90
  6. Step 6: Final answer
    x = 384.81

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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.