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Finding the Fourth Proportional to 554.16, 764.76 and 379.92

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Solution

The fourth proportional to 554.16, 764.76 and 379.92 is: 524.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.16 : 764.76 = 379.92 : x
  2. Step 2: Convert to fraction form
    554.16/764.76 = 379.92/x
  3. Step 3: Cross multiply
    554.16x = 764.76 × 379.92
  4. Step 4: Simplify right side
    554.16x = 290,547.62
  5. Step 5: Solve for x
    x = 290,547.62/554.16
  6. Step 6: Final answer
    x = 524.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.