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Finding the Fourth Proportional to 554.88, 830.88 and 381.16

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Solution

The fourth proportional to 554.88, 830.88 and 381.16 is: 570.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.88 : 830.88 = 381.16 : x
  2. Step 2: Convert to fraction form
    554.88/830.88 = 381.16/x
  3. Step 3: Cross multiply
    554.88x = 830.88 × 381.16
  4. Step 4: Simplify right side
    554.88x = 316,698.22
  5. Step 5: Solve for x
    x = 316,698.22/554.88
  6. Step 6: Final answer
    x = 570.75

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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.