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Finding the Fourth Proportional to 623.17, 933.93 and 478.18

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Solution

The fourth proportional to 623.17, 933.93 and 478.18 is: 716.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.17 : 933.93 = 478.18 : x
  2. Step 2: Convert to fraction form
    623.17/933.93 = 478.18/x
  3. Step 3: Cross multiply
    623.17x = 933.93 × 478.18
  4. Step 4: Simplify right side
    623.17x = 446,586.65
  5. Step 5: Solve for x
    x = 446,586.65/623.17
  6. Step 6: Final answer
    x = 716.64

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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.