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Finding the Fourth Proportional to 441.19, 608.25 and 378.75

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Solution

The fourth proportional to 441.19, 608.25 and 378.75 is: 522.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.19 : 608.25 = 378.75 : x
  2. Step 2: Convert to fraction form
    441.19/608.25 = 378.75/x
  3. Step 3: Cross multiply
    441.19x = 608.25 × 378.75
  4. Step 4: Simplify right side
    441.19x = 230,374.69
  5. Step 5: Solve for x
    x = 230,374.69/441.19
  6. Step 6: Final answer
    x = 522.17

Related Problems

Find fourth proportional to 220.60, 304.13 and 189.38
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Double scale
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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.