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Finding the Fourth Proportional to 623.16, 933.94 and 478.18

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Solution

The fourth proportional to 623.16, 933.94 and 478.18 is: 716.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.16 : 933.94 = 478.18 : x
  2. Step 2: Convert to fraction form
    623.16/933.94 = 478.18/x
  3. Step 3: Cross multiply
    623.16x = 933.94 × 478.18
  4. Step 4: Simplify right side
    623.16x = 446,591.43
  5. Step 5: Solve for x
    x = 446,591.43/623.16
  6. Step 6: Final answer
    x = 716.66

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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.