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Finding the Fourth Proportional to 622.95, 933.40 and 378.74

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Solution

The fourth proportional to 622.95, 933.40 and 378.74 is: 567.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.95 : 933.40 = 378.74 : x
  2. Step 2: Convert to fraction form
    622.95/933.40 = 378.74/x
  3. Step 3: Cross multiply
    622.95x = 933.40 × 378.74
  4. Step 4: Simplify right side
    622.95x = 353,515.92
  5. Step 5: Solve for x
    x = 353,515.92/622.95
  6. Step 6: Final answer
    x = 567.49

Related Problems

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Double scale
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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.