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Finding the Fourth Proportional to 416.93, 623.55 and 313.07

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Solution

The fourth proportional to 416.93, 623.55 and 313.07 is: 468.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.93 : 623.55 = 313.07 : x
  2. Step 2: Convert to fraction form
    416.93/623.55 = 313.07/x
  3. Step 3: Cross multiply
    416.93x = 623.55 × 313.07
  4. Step 4: Simplify right side
    416.93x = 195,214.80
  5. Step 5: Solve for x
    x = 195,214.80/416.93
  6. Step 6: Final answer
    x = 468.22

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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.