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Finding the Fourth Proportional to 623.13, 858.44 and 436.29

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Solution

The fourth proportional to 623.13, 858.44 and 436.29 is: 601.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.13 : 858.44 = 436.29 : x
  2. Step 2: Convert to fraction form
    623.13/858.44 = 436.29/x
  3. Step 3: Cross multiply
    623.13x = 858.44 × 436.29
  4. Step 4: Simplify right side
    623.13x = 374,528.79
  5. Step 5: Solve for x
    x = 374,528.79/623.13
  6. Step 6: Final answer
    x = 601.04

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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.